Patent
US 10,876,024Highly Thermally Conductive Hexagonal Boron Nitride/Alumina Composite
Ching-Cheh Hung
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,876,024Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates a method that can facilitate intercalation and exfoliation of hexagonal boron nitride (hBN) in accordance with aspects of the subject …
FIG. 2 shows a pair of transmission electron microscopy images of an exfoliated boron nitride nanotube (BNNT) that resulted from removing iron nanoparticles …
FIG. 3 illustrates examples of intercalation and exfoliation reactions involving FeC l 3 that were examined in experiments described herein. [0029]
FIG. 4 illustrates X-ray diffraction (XRD) scans of hBN reactant, and products described i n
FIG. 5 illustrates changes of the Fourier transform infrared spectroscopy (FT I R) peaks from hBN to intercalation, exfoliation, and deintercalation. [0031]
FIGS. 6A-B illustrate field emission scanning electron microscope (FESEM) images of hBN platelets with ferric chloride intercalate. [0032]
FIGS. 7A-B illustrate SEM pictures of an intercalated sample after it was slowly oxidized by oxygen in air at high temperature to become Fe 2 O 3 …
FIGS. 8 A-B illustrate SEM pictures of an intercalated sample after it was quickly oxidized by oxygen in air at high temperature. [0034]
FIGS. 9A-B illustrate SEM images of exfoliated hBN nanosheets. [0035]
FIG. 10 shows the percent mass increase of two intercalated samples during the ambient air exposure. [0036]
FIG. 11 shows FT-IR of an intercalated product, exposed to ambient air at 15- 30% relative humidity for 6 minutes, 64 hrs. and 189 hrs (top left); FT I R of …
FIG. 12 illustrates an exfoliated sample resulting from small hBN platelets intercalated and then hydrated in 100% relative humidity. [0038]
FIG. 13 illustrates a top view of an image of an exfoliated platelet, obtained by SEM operated at 0.5 K V, showing semi-transparent layers of hBN. [0039]
FIG. 14 illustrates SEM images of an exfoliated product containing aluminum oxide. [0040]
FIG. 15 illustrates additional SEM images of an exfoliated product containing aluminum oxide. [0041]
FIG. 16 shows an SEM of nanosized aluminum oxide coating on hBN, top, and an EDS (Energy-dispersive X-ray spectroscopy) graph showing the coating is aluminum …
FIG. 17 shows two additional SEM images of the nanosized aluminum oxide coating on hBN. [0043]
FIG. 18 shows XRD graphs of an original sample of hBN and molybdenum pentoxide intercalated hBN. [0044]
FIG. 19 shows SEM images of an exfoliated platelet made by molybdenum pentoxide intercalation and heating molybdenum pentoxide intercalated hBN in air. [0045]
FIG. 20 illustrates a method of intercalation and exfoliation of hBN employed in connection with a set of experiments discussed herein. [0046]
FIG. 21 illustrates another method employed for intercalation and exfoliation in connection with experiments discussed herein. [0047]
FIG. 22 illustrates an SEM picture of a final product of this process, in which exfol i ation of hBN can be seen. [0048]
FIG. 23 illustrates an SEM image at 1 kV showing some BN layers that were semi- transparent or almost invisible. [0049]
FIG. 24B illustrates another embodiment of a method that can facilitate intercalation and exfoliation of a starting reactant in accordance with aspects of the …
FIG. 25 is an SEM picture that illustrates one embodiment of exfoliated boron nitride nanosheets embedded in iron oxide. [0053]
FIG. 26 is an SEM picture that illustrates one embodiment of parallel sheets of a sample separated by glass particles. [0054]
FIG. 27 illustrates one embodiment of a method that can facilitate intercalation and exfoliation of a starting reactant of BNNT. [0055]
FIG. 28B is a TEM picture that illustrates one embodiment of a nanotube wall that has been exfoliated into nanoribbons. [005 7]
FIG. 29 is a block diagram illustration of a method of creating an hBN/alumina composite in accordance with an aspect of the innovation. [0058]
FIGS. 30A and 30B are SEM images at a higher magnification and a lower magnification respectively of hBN platelets in accordance with an aspect of the …
FIG. 31 is a FESEM image of the hBN platelet coated with aluminum oxide in accordance with an aspect of the innovation. [0060]
FIGS. 32A and 32B are X-ray diffraction graphs of the hBN platelet coated with aluminum oxide and the hBN/alumina composite respectively in accordance with an …
FIG. 33 is an SEM image of the hBN platelet as received in accordance with an aspect of the innovation. [0062]
FIG. 34 is an SEM image of the hBN platelet coated with aluminum oxide in accordance with an aspect of the innovation. [0063]
FIG. 35 is a temperature-time graph illustrating a temperature of the front and back surfaces of a sample (Sample 1) undergoing laser thermal gradient cycles …
FIG. 36 is a graph illustrating the rm al conductivity of Sample 1 over the course of 1.5 hours of the sample in accordance with an aspect of the i nnovation. …
FIG. 37 is a graph illustrating thermal conductivity of Sample 1 over the course of 10 hours of the sample in accordance with an aspect of the innovation. …
FIG. 38 is an illustration of Sample 1 after testing i n accordance with an aspect of the i nnovation. [0067]
FIG. 39 is a temperature-time graph illustrating a temperature of the front and back surfaces of another sample (Sample 2) undergoing rapid thermal gradient …
FIG. 40 is an illustration of Sample 2 after testing in accordance with an aspect of the innovation. [0069]
FIG. 41 is a thermal conductivity change comparison between Sample 1 and Sample 2 in accordance with an aspect of the innovation.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Previously Amended) A method of creating a composite comprising: preparing a mixture of hexagonal boron nitride (hBN) and an aluminum chloride; heating the mixture in an inert environment; and producing a first product comprising hexagonal boron nitride coated with a compound coating containing aluminum, chlorine, and oxygen; heating the first product in air to a temperature that is higher than the temperature at which the mixture is heated; and producing a second product comprising a hexagonal boron nitride coated with aluminum oxide. Currently amended
The method of claim 1, wherein the aluminum oxide coating has a thickness of about 5 nm to about 100 pm. Original
The method of claim 1, wherein the chloride is selected from aluminum chloride, a silicon chloride, an iron chloride, a titanium chloride, or a combination of two or more thereof. Original
The method of claim 1 wherein the temperature at which the product is heated in air is at least about 150 0 C. Original
The method of claim 1 further comprising: consolidating and hot pressing the second product; and producing an hBN-alumina composite. Original
A method of creating a composite comprising: preparing a mixture of hexagonal boron nitride (hBN) and hydrated aluminum chloride; heating the mixture in an inert environment to produce a first product comprising hexagonal boron nitride coated with a compound coating containing aluminum, chlorine, and oxygen; heating the first product in air to a temperature at or above an oxidation temperature of the compound coating to product a second product comprising hexagonal boron nitride coated with aluminum oxide; consolidating and hot pressing the second product at a temperature above a sintering temperature of the second product to produce an hBN-alumina composite. Original
The method of claim 10, wherein the hot pressing is done at a pressure in a range of about 5-1 5ksi. Original
The method of claim 10, wherein the hydrated aluminum chloride comprises about 0.1-10% by weight water. Original
The method of claim 10, wherein the hot pressing is done at a temperature greater than about 1700 °C. Original
The method of claim 10, wherein prior to consolidation and hot pressing, the second product is exfoliated. Original
16-20.. Canceled
Canceled
Materials described outside the worked examples.
hexagonal boron nitride
hBN
aluminum chloride
AlCl₃
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows a pair of transmission electron microscopy images of an exfoliated boron nitride nanotube (BNNT) that resulted from removing iron nanoparticles …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
aluminum oxide coating thickness | 5–100000 nm | hexagonal boron nitride coated with aluminum oxide |
Duration | 2–4 hours |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,876,024Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates a method that can facilitate intercalation and exfoliation of hexagonal boron nitride (hBN) in accordance with aspects of the subject …
FIG. 2 shows a pair of transmission electron microscopy images of an exfoliated boron nitride nanotube (BNNT) that resulted from removing iron nanoparticles …
FIG. 3 illustrates examples of intercalation and exfoliation reactions involving FeC l 3 that were examined in experiments described herein. [0029]
FIG. 4 illustrates X-ray diffraction (XRD) scans of hBN reactant, and products described i n
FIG. 5 illustrates changes of the Fourier transform infrared spectroscopy (FT I R) peaks from hBN to intercalation, exfoliation, and deintercalation. [0031]
FIGS. 6A-B illustrate field emission scanning electron microscope (FESEM) images of hBN platelets with ferric chloride intercalate. [0032]
FIGS. 7A-B illustrate SEM pictures of an intercalated sample after it was slowly oxidized by oxygen in air at high temperature to become Fe 2 O 3 …
FIGS. 8 A-B illustrate SEM pictures of an intercalated sample after it was quickly oxidized by oxygen in air at high temperature. [0034]
FIGS. 9A-B illustrate SEM images of exfoliated hBN nanosheets. [0035]
FIG. 10 shows the percent mass increase of two intercalated samples during the ambient air exposure. [0036]
FIG. 11 shows FT-IR of an intercalated product, exposed to ambient air at 15- 30% relative humidity for 6 minutes, 64 hrs. and 189 hrs (top left); FT I R of …
FIG. 12 illustrates an exfoliated sample resulting from small hBN platelets intercalated and then hydrated in 100% relative humidity. [0038]
FIG. 13 illustrates a top view of an image of an exfoliated platelet, obtained by SEM operated at 0.5 K V, showing semi-transparent layers of hBN. [0039]
FIG. 14 illustrates SEM images of an exfoliated product containing aluminum oxide. [0040]
FIG. 15 illustrates additional SEM images of an exfoliated product containing aluminum oxide. [0041]
FIG. 16 shows an SEM of nanosized aluminum oxide coating on hBN, top, and an EDS (Energy-dispersive X-ray spectroscopy) graph showing the coating is aluminum …
FIG. 17 shows two additional SEM images of the nanosized aluminum oxide coating on hBN. [0043]
FIG. 18 shows XRD graphs of an original sample of hBN and molybdenum pentoxide intercalated hBN. [0044]
FIG. 19 shows SEM images of an exfoliated platelet made by molybdenum pentoxide intercalation and heating molybdenum pentoxide intercalated hBN in air. [0045]
FIG. 20 illustrates a method of intercalation and exfoliation of hBN employed in connection with a set of experiments discussed herein. [0046]
FIG. 21 illustrates another method employed for intercalation and exfoliation in connection with experiments discussed herein. [0047]
FIG. 22 illustrates an SEM picture of a final product of this process, in which exfol i ation of hBN can be seen. [0048]
FIG. 23 illustrates an SEM image at 1 kV showing some BN layers that were semi- transparent or almost invisible. [0049]
FIG. 24B illustrates another embodiment of a method that can facilitate intercalation and exfoliation of a starting reactant in accordance with aspects of the …
FIG. 25 is an SEM picture that illustrates one embodiment of exfoliated boron nitride nanosheets embedded in iron oxide. [0053]
FIG. 26 is an SEM picture that illustrates one embodiment of parallel sheets of a sample separated by glass particles. [0054]
FIG. 27 illustrates one embodiment of a method that can facilitate intercalation and exfoliation of a starting reactant of BNNT. [0055]
FIG. 28B is a TEM picture that illustrates one embodiment of a nanotube wall that has been exfoliated into nanoribbons. [005 7]
FIG. 29 is a block diagram illustration of a method of creating an hBN/alumina composite in accordance with an aspect of the innovation. [0058]
FIGS. 30A and 30B are SEM images at a higher magnification and a lower magnification respectively of hBN platelets in accordance with an aspect of the …
FIG. 31 is a FESEM image of the hBN platelet coated with aluminum oxide in accordance with an aspect of the innovation. [0060]
FIGS. 32A and 32B are X-ray diffraction graphs of the hBN platelet coated with aluminum oxide and the hBN/alumina composite respectively in accordance with an …
FIG. 33 is an SEM image of the hBN platelet as received in accordance with an aspect of the innovation. [0062]
FIG. 34 is an SEM image of the hBN platelet coated with aluminum oxide in accordance with an aspect of the innovation. [0063]
FIG. 35 is a temperature-time graph illustrating a temperature of the front and back surfaces of a sample (Sample 1) undergoing laser thermal gradient cycles …
FIG. 36 is a graph illustrating the rm al conductivity of Sample 1 over the course of 1.5 hours of the sample in accordance with an aspect of the i nnovation. …
FIG. 37 is a graph illustrating thermal conductivity of Sample 1 over the course of 10 hours of the sample in accordance with an aspect of the innovation. …
FIG. 38 is an illustration of Sample 1 after testing i n accordance with an aspect of the i nnovation. [0067]
FIG. 39 is a temperature-time graph illustrating a temperature of the front and back surfaces of another sample (Sample 2) undergoing rapid thermal gradient …
FIG. 40 is an illustration of Sample 2 after testing in accordance with an aspect of the innovation. [0069]
FIG. 41 is a thermal conductivity change comparison between Sample 1 and Sample 2 in accordance with an aspect of the innovation.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Previously Amended) A method of creating a composite comprising: preparing a mixture of hexagonal boron nitride (hBN) and an aluminum chloride; heating the mixture in an inert environment; and producing a first product comprising hexagonal boron nitride coated with a compound coating containing aluminum, chlorine, and oxygen; heating the first product in air to a temperature that is higher than the temperature at which the mixture is heated; and producing a second product comprising a hexagonal boron nitride coated with aluminum oxide. Currently amended
The method of claim 1, wherein the aluminum oxide coating has a thickness of about 5 nm to about 100 pm. Original
The method of claim 1, wherein the chloride is selected from aluminum chloride, a silicon chloride, an iron chloride, a titanium chloride, or a combination of two or more thereof. Original
The method of claim 1 wherein the temperature at which the product is heated in air is at least about 150 0 C. Original
The method of claim 1 further comprising: consolidating and hot pressing the second product; and producing an hBN-alumina composite. Original
A method of creating a composite comprising: preparing a mixture of hexagonal boron nitride (hBN) and hydrated aluminum chloride; heating the mixture in an inert environment to produce a first product comprising hexagonal boron nitride coated with a compound coating containing aluminum, chlorine, and oxygen; heating the first product in air to a temperature at or above an oxidation temperature of the compound coating to product a second product comprising hexagonal boron nitride coated with aluminum oxide; consolidating and hot pressing the second product at a temperature above a sintering temperature of the second product to produce an hBN-alumina composite. Original
The method of claim 10, wherein the hot pressing is done at a pressure in a range of about 5-1 5ksi. Original
The method of claim 10, wherein the hydrated aluminum chloride comprises about 0.1-10% by weight water. Original
The method of claim 10, wherein the hot pressing is done at a temperature greater than about 1700 °C. Original
The method of claim 10, wherein prior to consolidation and hot pressing, the second product is exfoliated. Original
16-20.. Canceled
Canceled
Materials described outside the worked examples.
hexagonal boron nitride
hBN
aluminum chloride
AlCl₃
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows a pair of transmission electron microscopy images of an exfoliated boron nitride nanotube (BNNT) that resulted from removing iron nanoparticles …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
aluminum oxide coating thickness | 5–100000 nm | hexagonal boron nitride coated with aluminum oxide |
Duration | 2–4 hours |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,876,024Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates a method that can facilitate intercalation and exfoliation of hexagonal boron nitride (hBN) in accordance with aspects of the subject …
FIG. 2 shows a pair of transmission electron microscopy images of an exfoliated boron nitride nanotube (BNNT) that resulted from removing iron nanoparticles …
FIG. 3 illustrates examples of intercalation and exfoliation reactions involving FeC l 3 that were examined in experiments described herein. [0029]
FIG. 4 illustrates X-ray diffraction (XRD) scans of hBN reactant, and products described i n
FIG. 5 illustrates changes of the Fourier transform infrared spectroscopy (FT I R) peaks from hBN to intercalation, exfoliation, and deintercalation. [0031]
FIGS. 6A-B illustrate field emission scanning electron microscope (FESEM) images of hBN platelets with ferric chloride intercalate. [0032]
FIGS. 7A-B illustrate SEM pictures of an intercalated sample after it was slowly oxidized by oxygen in air at high temperature to become Fe 2 O 3 …
FIGS. 8 A-B illustrate SEM pictures of an intercalated sample after it was quickly oxidized by oxygen in air at high temperature. [0034]
FIGS. 9A-B illustrate SEM images of exfoliated hBN nanosheets. [0035]
FIG. 10 shows the percent mass increase of two intercalated samples during the ambient air exposure. [0036]
FIG. 11 shows FT-IR of an intercalated product, exposed to ambient air at 15- 30% relative humidity for 6 minutes, 64 hrs. and 189 hrs (top left); FT I R of …
FIG. 12 illustrates an exfoliated sample resulting from small hBN platelets intercalated and then hydrated in 100% relative humidity. [0038]
FIG. 13 illustrates a top view of an image of an exfoliated platelet, obtained by SEM operated at 0.5 K V, showing semi-transparent layers of hBN. [0039]
FIG. 14 illustrates SEM images of an exfoliated product containing aluminum oxide. [0040]
FIG. 15 illustrates additional SEM images of an exfoliated product containing aluminum oxide. [0041]
FIG. 16 shows an SEM of nanosized aluminum oxide coating on hBN, top, and an EDS (Energy-dispersive X-ray spectroscopy) graph showing the coating is aluminum …
FIG. 17 shows two additional SEM images of the nanosized aluminum oxide coating on hBN. [0043]
FIG. 18 shows XRD graphs of an original sample of hBN and molybdenum pentoxide intercalated hBN. [0044]
FIG. 19 shows SEM images of an exfoliated platelet made by molybdenum pentoxide intercalation and heating molybdenum pentoxide intercalated hBN in air. [0045]
FIG. 20 illustrates a method of intercalation and exfoliation of hBN employed in connection with a set of experiments discussed herein. [0046]
FIG. 21 illustrates another method employed for intercalation and exfoliation in connection with experiments discussed herein. [0047]
FIG. 22 illustrates an SEM picture of a final product of this process, in which exfol i ation of hBN can be seen. [0048]
FIG. 23 illustrates an SEM image at 1 kV showing some BN layers that were semi- transparent or almost invisible. [0049]
FIG. 24B illustrates another embodiment of a method that can facilitate intercalation and exfoliation of a starting reactant in accordance with aspects of the …
FIG. 25 is an SEM picture that illustrates one embodiment of exfoliated boron nitride nanosheets embedded in iron oxide. [0053]
FIG. 26 is an SEM picture that illustrates one embodiment of parallel sheets of a sample separated by glass particles. [0054]
FIG. 27 illustrates one embodiment of a method that can facilitate intercalation and exfoliation of a starting reactant of BNNT. [0055]
FIG. 28B is a TEM picture that illustrates one embodiment of a nanotube wall that has been exfoliated into nanoribbons. [005 7]
FIG. 29 is a block diagram illustration of a method of creating an hBN/alumina composite in accordance with an aspect of the innovation. [0058]
FIGS. 30A and 30B are SEM images at a higher magnification and a lower magnification respectively of hBN platelets in accordance with an aspect of the …
FIG. 31 is a FESEM image of the hBN platelet coated with aluminum oxide in accordance with an aspect of the innovation. [0060]
FIGS. 32A and 32B are X-ray diffraction graphs of the hBN platelet coated with aluminum oxide and the hBN/alumina composite respectively in accordance with an …
FIG. 33 is an SEM image of the hBN platelet as received in accordance with an aspect of the innovation. [0062]
FIG. 34 is an SEM image of the hBN platelet coated with aluminum oxide in accordance with an aspect of the innovation. [0063]
FIG. 35 is a temperature-time graph illustrating a temperature of the front and back surfaces of a sample (Sample 1) undergoing laser thermal gradient cycles …
FIG. 36 is a graph illustrating the rm al conductivity of Sample 1 over the course of 1.5 hours of the sample in accordance with an aspect of the i nnovation. …
FIG. 37 is a graph illustrating thermal conductivity of Sample 1 over the course of 10 hours of the sample in accordance with an aspect of the innovation. …
FIG. 38 is an illustration of Sample 1 after testing i n accordance with an aspect of the i nnovation. [0067]
FIG. 39 is a temperature-time graph illustrating a temperature of the front and back surfaces of another sample (Sample 2) undergoing rapid thermal gradient …
FIG. 40 is an illustration of Sample 2 after testing in accordance with an aspect of the innovation. [0069]
FIG. 41 is a thermal conductivity change comparison between Sample 1 and Sample 2 in accordance with an aspect of the innovation.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Previously Amended) A method of creating a composite comprising: preparing a mixture of hexagonal boron nitride (hBN) and an aluminum chloride; heating the mixture in an inert environment; and producing a first product comprising hexagonal boron nitride coated with a compound coating containing aluminum, chlorine, and oxygen; heating the first product in air to a temperature that is higher than the temperature at which the mixture is heated; and producing a second product comprising a hexagonal boron nitride coated with aluminum oxide. Currently amended
The method of claim 1, wherein the aluminum oxide coating has a thickness of about 5 nm to about 100 pm. Original
The method of claim 1, wherein the chloride is selected from aluminum chloride, a silicon chloride, an iron chloride, a titanium chloride, or a combination of two or more thereof. Original
The method of claim 1 wherein the temperature at which the product is heated in air is at least about 150 0 C. Original
The method of claim 1 further comprising: consolidating and hot pressing the second product; and producing an hBN-alumina composite. Original
A method of creating a composite comprising: preparing a mixture of hexagonal boron nitride (hBN) and hydrated aluminum chloride; heating the mixture in an inert environment to produce a first product comprising hexagonal boron nitride coated with a compound coating containing aluminum, chlorine, and oxygen; heating the first product in air to a temperature at or above an oxidation temperature of the compound coating to product a second product comprising hexagonal boron nitride coated with aluminum oxide; consolidating and hot pressing the second product at a temperature above a sintering temperature of the second product to produce an hBN-alumina composite. Original
The method of claim 10, wherein the hot pressing is done at a pressure in a range of about 5-1 5ksi. Original
The method of claim 10, wherein the hydrated aluminum chloride comprises about 0.1-10% by weight water. Original
The method of claim 10, wherein the hot pressing is done at a temperature greater than about 1700 °C. Original
The method of claim 10, wherein prior to consolidation and hot pressing, the second product is exfoliated. Original
16-20.. Canceled
Canceled
Materials described outside the worked examples.
hexagonal boron nitride
hBN
aluminum chloride
AlCl₃
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows a pair of transmission electron microscopy images of an exfoliated boron nitride nanotube (BNNT) that resulted from removing iron nanoparticles …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
aluminum oxide coating thickness | 5–100000 nm | hexagonal boron nitride coated with aluminum oxide |
Duration | 2–4 hours |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,876,024Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates a method that can facilitate intercalation and exfoliation of hexagonal boron nitride (hBN) in accordance with aspects of the subject …
FIG. 2 shows a pair of transmission electron microscopy images of an exfoliated boron nitride nanotube (BNNT) that resulted from removing iron nanoparticles …
FIG. 3 illustrates examples of intercalation and exfoliation reactions involving FeC l 3 that were examined in experiments described herein. [0029]
FIG. 4 illustrates X-ray diffraction (XRD) scans of hBN reactant, and products described i n
FIG. 5 illustrates changes of the Fourier transform infrared spectroscopy (FT I R) peaks from hBN to intercalation, exfoliation, and deintercalation. [0031]
FIGS. 6A-B illustrate field emission scanning electron microscope (FESEM) images of hBN platelets with ferric chloride intercalate. [0032]
FIGS. 7A-B illustrate SEM pictures of an intercalated sample after it was slowly oxidized by oxygen in air at high temperature to become Fe 2 O 3 …
FIGS. 8 A-B illustrate SEM pictures of an intercalated sample after it was quickly oxidized by oxygen in air at high temperature. [0034]
FIGS. 9A-B illustrate SEM images of exfoliated hBN nanosheets. [0035]
FIG. 10 shows the percent mass increase of two intercalated samples during the ambient air exposure. [0036]
FIG. 11 shows FT-IR of an intercalated product, exposed to ambient air at 15- 30% relative humidity for 6 minutes, 64 hrs. and 189 hrs (top left); FT I R of …
FIG. 12 illustrates an exfoliated sample resulting from small hBN platelets intercalated and then hydrated in 100% relative humidity. [0038]
FIG. 13 illustrates a top view of an image of an exfoliated platelet, obtained by SEM operated at 0.5 K V, showing semi-transparent layers of hBN. [0039]
FIG. 14 illustrates SEM images of an exfoliated product containing aluminum oxide. [0040]
FIG. 15 illustrates additional SEM images of an exfoliated product containing aluminum oxide. [0041]
FIG. 16 shows an SEM of nanosized aluminum oxide coating on hBN, top, and an EDS (Energy-dispersive X-ray spectroscopy) graph showing the coating is aluminum …
FIG. 17 shows two additional SEM images of the nanosized aluminum oxide coating on hBN. [0043]
FIG. 18 shows XRD graphs of an original sample of hBN and molybdenum pentoxide intercalated hBN. [0044]
FIG. 19 shows SEM images of an exfoliated platelet made by molybdenum pentoxide intercalation and heating molybdenum pentoxide intercalated hBN in air. [0045]
FIG. 20 illustrates a method of intercalation and exfoliation of hBN employed in connection with a set of experiments discussed herein. [0046]
FIG. 21 illustrates another method employed for intercalation and exfoliation in connection with experiments discussed herein. [0047]
FIG. 22 illustrates an SEM picture of a final product of this process, in which exfol i ation of hBN can be seen. [0048]
FIG. 23 illustrates an SEM image at 1 kV showing some BN layers that were semi- transparent or almost invisible. [0049]
FIG. 24B illustrates another embodiment of a method that can facilitate intercalation and exfoliation of a starting reactant in accordance with aspects of the …
FIG. 25 is an SEM picture that illustrates one embodiment of exfoliated boron nitride nanosheets embedded in iron oxide. [0053]
FIG. 26 is an SEM picture that illustrates one embodiment of parallel sheets of a sample separated by glass particles. [0054]
FIG. 27 illustrates one embodiment of a method that can facilitate intercalation and exfoliation of a starting reactant of BNNT. [0055]
FIG. 28B is a TEM picture that illustrates one embodiment of a nanotube wall that has been exfoliated into nanoribbons. [005 7]
FIG. 29 is a block diagram illustration of a method of creating an hBN/alumina composite in accordance with an aspect of the innovation. [0058]
FIGS. 30A and 30B are SEM images at a higher magnification and a lower magnification respectively of hBN platelets in accordance with an aspect of the …
FIG. 31 is a FESEM image of the hBN platelet coated with aluminum oxide in accordance with an aspect of the innovation. [0060]
FIGS. 32A and 32B are X-ray diffraction graphs of the hBN platelet coated with aluminum oxide and the hBN/alumina composite respectively in accordance with an …
FIG. 33 is an SEM image of the hBN platelet as received in accordance with an aspect of the innovation. [0062]
FIG. 34 is an SEM image of the hBN platelet coated with aluminum oxide in accordance with an aspect of the innovation. [0063]
FIG. 35 is a temperature-time graph illustrating a temperature of the front and back surfaces of a sample (Sample 1) undergoing laser thermal gradient cycles …
FIG. 36 is a graph illustrating the rm al conductivity of Sample 1 over the course of 1.5 hours of the sample in accordance with an aspect of the i nnovation. …
FIG. 37 is a graph illustrating thermal conductivity of Sample 1 over the course of 10 hours of the sample in accordance with an aspect of the innovation. …
FIG. 38 is an illustration of Sample 1 after testing i n accordance with an aspect of the i nnovation. [0067]
FIG. 39 is a temperature-time graph illustrating a temperature of the front and back surfaces of another sample (Sample 2) undergoing rapid thermal gradient …
FIG. 40 is an illustration of Sample 2 after testing in accordance with an aspect of the innovation. [0069]
FIG. 41 is a thermal conductivity change comparison between Sample 1 and Sample 2 in accordance with an aspect of the innovation.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
(Previously Amended) A method of creating a composite comprising: preparing a mixture of hexagonal boron nitride (hBN) and an aluminum chloride; heating the mixture in an inert environment; and producing a first product comprising hexagonal boron nitride coated with a compound coating containing aluminum, chlorine, and oxygen; heating the first product in air to a temperature that is higher than the temperature at which the mixture is heated; and producing a second product comprising a hexagonal boron nitride coated with aluminum oxide. Currently amended
The method of claim 1, wherein the aluminum oxide coating has a thickness of about 5 nm to about 100 pm. Original
The method of claim 1, wherein the chloride is selected from aluminum chloride, a silicon chloride, an iron chloride, a titanium chloride, or a combination of two or more thereof. Original
The method of claim 1 wherein the temperature at which the product is heated in air is at least about 150 0 C. Original
The method of claim 1 further comprising: consolidating and hot pressing the second product; and producing an hBN-alumina composite. Original
A method of creating a composite comprising: preparing a mixture of hexagonal boron nitride (hBN) and hydrated aluminum chloride; heating the mixture in an inert environment to produce a first product comprising hexagonal boron nitride coated with a compound coating containing aluminum, chlorine, and oxygen; heating the first product in air to a temperature at or above an oxidation temperature of the compound coating to product a second product comprising hexagonal boron nitride coated with aluminum oxide; consolidating and hot pressing the second product at a temperature above a sintering temperature of the second product to produce an hBN-alumina composite. Original
The method of claim 10, wherein the hot pressing is done at a pressure in a range of about 5-1 5ksi. Original
The method of claim 10, wherein the hydrated aluminum chloride comprises about 0.1-10% by weight water. Original
The method of claim 10, wherein the hot pressing is done at a temperature greater than about 1700 °C. Original
The method of claim 10, wherein prior to consolidation and hot pressing, the second product is exfoliated. Original
16-20.. Canceled
Canceled
Materials described outside the worked examples.
hexagonal boron nitride
hBN
aluminum chloride
AlCl₃
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows a pair of transmission electron microscopy images of an exfoliated boron nitride nanotube (BNNT) that resulted from removing iron nanoparticles …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
aluminum oxide coating thickness | 5–100000 nm | hexagonal boron nitride coated with aluminum oxide |
Duration | 2–4 hours |
Related documents with shared materials, methods, properties, or citations.
hexagonal boron nitride coated with compound containing aluminum, chlorine, and oxygen
hexagonal boron nitride coated with aluminum oxide
silicon chloride
iron chloride
titanium chloride
hydrated aluminum chloride
hBN-alumina composite
alumina
Al₂O₃
aluminum nitride
AlN
aluminum
Al
silicon dioxide
SiO₂
titanium dioxide
TiO₂
mullite
mica
FIG. 4 illustrates X-ray diffraction (XRD) scans of hBN reactant, and products described i n
FIG. 5 illustrates changes of the Fourier transform infrared spectroscopy (FT I R) peaks from hBN to intercalation, exfoliation, and deintercalation. [0031]
FIGS. 6A-B illustrate field emission scanning electron microscope (FESEM) images of hBN platelets with ferric chloride intercalate. [0032]
FIGS. 7A-B illustrate SEM pictures of an intercalated sample after it was slowly oxidized by oxygen in air at high temperature to become Fe 2 O 3 …
FIGS. 8 A-B illustrate SEM pictures of an intercalated sample after it was quickly oxidized by oxygen in air at high temperature. [0034]
FIG. 11 shows FT-IR of an intercalated product, exposed to ambient air at 15- 30% relative humidity for 6 minutes, 64 hrs. and 189 hrs (top left); FT I R of …
FIG. 13 illustrates a top view of an image of an exfoliated platelet, obtained by SEM operated at 0.5 K V, showing semi-transparent layers of hBN. [0039]
FIG. 14 illustrates SEM images of an exfoliated product containing aluminum oxide. [0040]
FIG. 15 illustrates additional SEM images of an exfoliated product containing aluminum oxide. [0041]
FIG. 16 shows an SEM of nanosized aluminum oxide coating on hBN, top, and an EDS (Energy-dispersive X-ray spectroscopy) graph showing the coating is aluminum …
FIG. 16 shows an SEM of nanosized aluminum oxide coating on hBN, top, and an EDS (Energy-dispersive X-ray spectroscopy) graph showing the coating is aluminum …
FIG. 17 shows two additional SEM images of the nanosized aluminum oxide coating on hBN. [0043]
FIG. 18 shows XRD graphs of an original sample of hBN and molybdenum pentoxide intercalated hBN. [0044]
FIG. 19 shows SEM images of an exfoliated platelet made by molybdenum pentoxide intercalation and heating molybdenum pentoxide intercalated hBN in air. [0045]
FIG. 22 illustrates an SEM picture of a final product of this process, in which exfol i ation of hBN can be seen. [0048]
FIG. 23 illustrates an SEM image at 1 kV showing some BN layers that were semi- transparent or almost invisible. [0049]
FIG. 25 is an SEM picture that illustrates one embodiment of exfoliated boron nitride nanosheets embedded in iron oxide. [0053]
FIG. 26 is an SEM picture that illustrates one embodiment of parallel sheets of a sample separated by glass particles. [0054]
FIG. 28B is a TEM picture that illustrates one embodiment of a nanotube wall that has been exfoliated into nanoribbons. [005 7]
FIG. 28B is a TEM picture that illustrates one embodiment of a nanotube wall that has been exfoliated into nanoribbons. [005 7]
FIGS. 30A and 30B are SEM images at a higher magnification and a lower magnification respectively of hBN platelets in accordance with an aspect of the …
FIG. 33 is an SEM image of the hBN platelet as received in accordance with an aspect of the innovation. [0062]
FIG. 34 is an SEM image of the hBN platelet coated with aluminum oxide in accordance with an aspect of the innovation. [0063]
FIG. 35 is a temperature-time graph illustrating a temperature of the front and back surfaces of a sample (Sample 1) undergoing laser thermal gradient cycles …
FIG. 36 is a graph illustrating the rm al conductivity of Sample 1 over the course of 1.5 hours of the sample in accordance with an aspect of the i nnovation. …
FIG. 37 is a graph illustrating thermal conductivity of Sample 1 over the course of 10 hours of the sample in accordance with an aspect of the innovation. …
FIG. 39 is a temperature-time graph illustrating a temperature of the front and back surfaces of another sample (Sample 2) undergoing rapid thermal gradient …
durability, performance, and reliability. This issue will become increasingly problematic with the continuing trend of smaller and more powerful devices. [00181] In order to overcome and alleviate thermal issues in electronic and electrical devices, and in ele
| — |
Thickness | 3050–3700 cm | — |
Thickness | 1277–1383 cm | — |
Thickness | 755–760 cm | — |
— | 8.7–18 W | — |
Thickness | 200–800 nm | — |
Thickness | 80–200 nm | — |
Thickness | 1700-900 cm | — |
Thickness | 3000–3800 cm | — |
Thickness | 500–2000 cm | — |
Thickness | 20–30 nm | — |
Thickness | 10–20 nm | — |
Thickness | 10–60 nm | — |
Duration | 30–40 minutes | — |
Thickness | 2700–3700 cm | — |
Thickness | 1280–1380 cm | — |
Thickness | ≤ 5.5 nm | — |
Thickness | ≥ 3 mm | — |
Temperature | ≥ 1700 °C | — |
hexagonal boron nitride coated with compound containing aluminum, chlorine, and oxygen
hexagonal boron nitride coated with aluminum oxide
silicon chloride
iron chloride
titanium chloride
hydrated aluminum chloride
hBN-alumina composite
alumina
Al₂O₃
aluminum nitride
AlN
aluminum
Al
silicon dioxide
SiO₂
titanium dioxide
TiO₂
mullite
mica
FIG. 4 illustrates X-ray diffraction (XRD) scans of hBN reactant, and products described i n
FIG. 5 illustrates changes of the Fourier transform infrared spectroscopy (FT I R) peaks from hBN to intercalation, exfoliation, and deintercalation. [0031]
FIGS. 6A-B illustrate field emission scanning electron microscope (FESEM) images of hBN platelets with ferric chloride intercalate. [0032]
FIGS. 7A-B illustrate SEM pictures of an intercalated sample after it was slowly oxidized by oxygen in air at high temperature to become Fe 2 O 3 …
FIGS. 8 A-B illustrate SEM pictures of an intercalated sample after it was quickly oxidized by oxygen in air at high temperature. [0034]
FIG. 11 shows FT-IR of an intercalated product, exposed to ambient air at 15- 30% relative humidity for 6 minutes, 64 hrs. and 189 hrs (top left); FT I R of …
FIG. 13 illustrates a top view of an image of an exfoliated platelet, obtained by SEM operated at 0.5 K V, showing semi-transparent layers of hBN. [0039]
FIG. 14 illustrates SEM images of an exfoliated product containing aluminum oxide. [0040]
FIG. 15 illustrates additional SEM images of an exfoliated product containing aluminum oxide. [0041]
FIG. 16 shows an SEM of nanosized aluminum oxide coating on hBN, top, and an EDS (Energy-dispersive X-ray spectroscopy) graph showing the coating is aluminum …
FIG. 16 shows an SEM of nanosized aluminum oxide coating on hBN, top, and an EDS (Energy-dispersive X-ray spectroscopy) graph showing the coating is aluminum …
FIG. 17 shows two additional SEM images of the nanosized aluminum oxide coating on hBN. [0043]
FIG. 18 shows XRD graphs of an original sample of hBN and molybdenum pentoxide intercalated hBN. [0044]
FIG. 19 shows SEM images of an exfoliated platelet made by molybdenum pentoxide intercalation and heating molybdenum pentoxide intercalated hBN in air. [0045]
FIG. 22 illustrates an SEM picture of a final product of this process, in which exfol i ation of hBN can be seen. [0048]
FIG. 23 illustrates an SEM image at 1 kV showing some BN layers that were semi- transparent or almost invisible. [0049]
FIG. 25 is an SEM picture that illustrates one embodiment of exfoliated boron nitride nanosheets embedded in iron oxide. [0053]
FIG. 26 is an SEM picture that illustrates one embodiment of parallel sheets of a sample separated by glass particles. [0054]
FIG. 28B is a TEM picture that illustrates one embodiment of a nanotube wall that has been exfoliated into nanoribbons. [005 7]
FIG. 28B is a TEM picture that illustrates one embodiment of a nanotube wall that has been exfoliated into nanoribbons. [005 7]
FIGS. 30A and 30B are SEM images at a higher magnification and a lower magnification respectively of hBN platelets in accordance with an aspect of the …
FIG. 33 is an SEM image of the hBN platelet as received in accordance with an aspect of the innovation. [0062]
FIG. 34 is an SEM image of the hBN platelet coated with aluminum oxide in accordance with an aspect of the innovation. [0063]
FIG. 35 is a temperature-time graph illustrating a temperature of the front and back surfaces of a sample (Sample 1) undergoing laser thermal gradient cycles …
FIG. 36 is a graph illustrating the rm al conductivity of Sample 1 over the course of 1.5 hours of the sample in accordance with an aspect of the i nnovation. …
FIG. 37 is a graph illustrating thermal conductivity of Sample 1 over the course of 10 hours of the sample in accordance with an aspect of the innovation. …
FIG. 39 is a temperature-time graph illustrating a temperature of the front and back surfaces of another sample (Sample 2) undergoing rapid thermal gradient …
durability, performance, and reliability. This issue will become increasingly problematic with the continuing trend of smaller and more powerful devices. [00181] In order to overcome and alleviate thermal issues in electronic and electrical devices, and in ele
| — |
Thickness | 3050–3700 cm | — |
Thickness | 1277–1383 cm | — |
Thickness | 755–760 cm | — |
— | 8.7–18 W | — |
Thickness | 200–800 nm | — |
Thickness | 80–200 nm | — |
Thickness | 1700-900 cm | — |
Thickness | 3000–3800 cm | — |
Thickness | 500–2000 cm | — |
Thickness | 20–30 nm | — |
Thickness | 10–20 nm | — |
Thickness | 10–60 nm | — |
Duration | 30–40 minutes | — |
Thickness | 2700–3700 cm | — |
Thickness | 1280–1380 cm | — |
Thickness | ≤ 5.5 nm | — |
Thickness | ≥ 3 mm | — |
Temperature | ≥ 1700 °C | — |
hexagonal boron nitride coated with compound containing aluminum, chlorine, and oxygen
hexagonal boron nitride coated with aluminum oxide
silicon chloride
iron chloride
titanium chloride
hydrated aluminum chloride
hBN-alumina composite
alumina
Al₂O₃
aluminum nitride
AlN
aluminum
Al
silicon dioxide
SiO₂
titanium dioxide
TiO₂
mullite
mica
FIG. 4 illustrates X-ray diffraction (XRD) scans of hBN reactant, and products described i n
FIG. 5 illustrates changes of the Fourier transform infrared spectroscopy (FT I R) peaks from hBN to intercalation, exfoliation, and deintercalation. [0031]
FIGS. 6A-B illustrate field emission scanning electron microscope (FESEM) images of hBN platelets with ferric chloride intercalate. [0032]
FIGS. 7A-B illustrate SEM pictures of an intercalated sample after it was slowly oxidized by oxygen in air at high temperature to become Fe 2 O 3 …
FIGS. 8 A-B illustrate SEM pictures of an intercalated sample after it was quickly oxidized by oxygen in air at high temperature. [0034]
FIG. 11 shows FT-IR of an intercalated product, exposed to ambient air at 15- 30% relative humidity for 6 minutes, 64 hrs. and 189 hrs (top left); FT I R of …
FIG. 13 illustrates a top view of an image of an exfoliated platelet, obtained by SEM operated at 0.5 K V, showing semi-transparent layers of hBN. [0039]
FIG. 14 illustrates SEM images of an exfoliated product containing aluminum oxide. [0040]
FIG. 15 illustrates additional SEM images of an exfoliated product containing aluminum oxide. [0041]
FIG. 16 shows an SEM of nanosized aluminum oxide coating on hBN, top, and an EDS (Energy-dispersive X-ray spectroscopy) graph showing the coating is aluminum …
FIG. 16 shows an SEM of nanosized aluminum oxide coating on hBN, top, and an EDS (Energy-dispersive X-ray spectroscopy) graph showing the coating is aluminum …
FIG. 17 shows two additional SEM images of the nanosized aluminum oxide coating on hBN. [0043]
FIG. 18 shows XRD graphs of an original sample of hBN and molybdenum pentoxide intercalated hBN. [0044]
FIG. 19 shows SEM images of an exfoliated platelet made by molybdenum pentoxide intercalation and heating molybdenum pentoxide intercalated hBN in air. [0045]
FIG. 22 illustrates an SEM picture of a final product of this process, in which exfol i ation of hBN can be seen. [0048]
FIG. 23 illustrates an SEM image at 1 kV showing some BN layers that were semi- transparent or almost invisible. [0049]
FIG. 25 is an SEM picture that illustrates one embodiment of exfoliated boron nitride nanosheets embedded in iron oxide. [0053]
FIG. 26 is an SEM picture that illustrates one embodiment of parallel sheets of a sample separated by glass particles. [0054]
FIG. 28B is a TEM picture that illustrates one embodiment of a nanotube wall that has been exfoliated into nanoribbons. [005 7]
FIG. 28B is a TEM picture that illustrates one embodiment of a nanotube wall that has been exfoliated into nanoribbons. [005 7]
FIGS. 30A and 30B are SEM images at a higher magnification and a lower magnification respectively of hBN platelets in accordance with an aspect of the …
FIG. 33 is an SEM image of the hBN platelet as received in accordance with an aspect of the innovation. [0062]
FIG. 34 is an SEM image of the hBN platelet coated with aluminum oxide in accordance with an aspect of the innovation. [0063]
FIG. 35 is a temperature-time graph illustrating a temperature of the front and back surfaces of a sample (Sample 1) undergoing laser thermal gradient cycles …
FIG. 36 is a graph illustrating the rm al conductivity of Sample 1 over the course of 1.5 hours of the sample in accordance with an aspect of the i nnovation. …
FIG. 37 is a graph illustrating thermal conductivity of Sample 1 over the course of 10 hours of the sample in accordance with an aspect of the innovation. …
FIG. 39 is a temperature-time graph illustrating a temperature of the front and back surfaces of another sample (Sample 2) undergoing rapid thermal gradient …
durability, performance, and reliability. This issue will become increasingly problematic with the continuing trend of smaller and more powerful devices. [00181] In order to overcome and alleviate thermal issues in electronic and electrical devices, and in ele
| — |
Thickness | 3050–3700 cm | — |
Thickness | 1277–1383 cm | — |
Thickness | 755–760 cm | — |
— | 8.7–18 W | — |
Thickness | 200–800 nm | — |
Thickness | 80–200 nm | — |
Thickness | 1700-900 cm | — |
Thickness | 3000–3800 cm | — |
Thickness | 500–2000 cm | — |
Thickness | 20–30 nm | — |
Thickness | 10–20 nm | — |
Thickness | 10–60 nm | — |
Duration | 30–40 minutes | — |
Thickness | 2700–3700 cm | — |
Thickness | 1280–1380 cm | — |
Thickness | ≤ 5.5 nm | — |
Thickness | ≥ 3 mm | — |
Temperature | ≥ 1700 °C | — |
hexagonal boron nitride coated with compound containing aluminum, chlorine, and oxygen
hexagonal boron nitride coated with aluminum oxide
silicon chloride
iron chloride
titanium chloride
hydrated aluminum chloride
hBN-alumina composite
alumina
Al₂O₃
aluminum nitride
AlN
aluminum
Al
silicon dioxide
SiO₂
titanium dioxide
TiO₂
mullite
mica
FIG. 4 illustrates X-ray diffraction (XRD) scans of hBN reactant, and products described i n
FIG. 5 illustrates changes of the Fourier transform infrared spectroscopy (FT I R) peaks from hBN to intercalation, exfoliation, and deintercalation. [0031]
FIGS. 6A-B illustrate field emission scanning electron microscope (FESEM) images of hBN platelets with ferric chloride intercalate. [0032]
FIGS. 7A-B illustrate SEM pictures of an intercalated sample after it was slowly oxidized by oxygen in air at high temperature to become Fe 2 O 3 …
FIGS. 8 A-B illustrate SEM pictures of an intercalated sample after it was quickly oxidized by oxygen in air at high temperature. [0034]
FIG. 11 shows FT-IR of an intercalated product, exposed to ambient air at 15- 30% relative humidity for 6 minutes, 64 hrs. and 189 hrs (top left); FT I R of …
FIG. 13 illustrates a top view of an image of an exfoliated platelet, obtained by SEM operated at 0.5 K V, showing semi-transparent layers of hBN. [0039]
FIG. 14 illustrates SEM images of an exfoliated product containing aluminum oxide. [0040]
FIG. 15 illustrates additional SEM images of an exfoliated product containing aluminum oxide. [0041]
FIG. 16 shows an SEM of nanosized aluminum oxide coating on hBN, top, and an EDS (Energy-dispersive X-ray spectroscopy) graph showing the coating is aluminum …
FIG. 16 shows an SEM of nanosized aluminum oxide coating on hBN, top, and an EDS (Energy-dispersive X-ray spectroscopy) graph showing the coating is aluminum …
FIG. 17 shows two additional SEM images of the nanosized aluminum oxide coating on hBN. [0043]
FIG. 18 shows XRD graphs of an original sample of hBN and molybdenum pentoxide intercalated hBN. [0044]
FIG. 19 shows SEM images of an exfoliated platelet made by molybdenum pentoxide intercalation and heating molybdenum pentoxide intercalated hBN in air. [0045]
FIG. 22 illustrates an SEM picture of a final product of this process, in which exfol i ation of hBN can be seen. [0048]
FIG. 23 illustrates an SEM image at 1 kV showing some BN layers that were semi- transparent or almost invisible. [0049]
FIG. 25 is an SEM picture that illustrates one embodiment of exfoliated boron nitride nanosheets embedded in iron oxide. [0053]
FIG. 26 is an SEM picture that illustrates one embodiment of parallel sheets of a sample separated by glass particles. [0054]
FIG. 28B is a TEM picture that illustrates one embodiment of a nanotube wall that has been exfoliated into nanoribbons. [005 7]
FIG. 28B is a TEM picture that illustrates one embodiment of a nanotube wall that has been exfoliated into nanoribbons. [005 7]
FIGS. 30A and 30B are SEM images at a higher magnification and a lower magnification respectively of hBN platelets in accordance with an aspect of the …
FIG. 33 is an SEM image of the hBN platelet as received in accordance with an aspect of the innovation. [0062]
FIG. 34 is an SEM image of the hBN platelet coated with aluminum oxide in accordance with an aspect of the innovation. [0063]
FIG. 35 is a temperature-time graph illustrating a temperature of the front and back surfaces of a sample (Sample 1) undergoing laser thermal gradient cycles …
FIG. 36 is a graph illustrating the rm al conductivity of Sample 1 over the course of 1.5 hours of the sample in accordance with an aspect of the i nnovation. …
FIG. 37 is a graph illustrating thermal conductivity of Sample 1 over the course of 10 hours of the sample in accordance with an aspect of the innovation. …
FIG. 39 is a temperature-time graph illustrating a temperature of the front and back surfaces of another sample (Sample 2) undergoing rapid thermal gradient …
durability, performance, and reliability. This issue will become increasingly problematic with the continuing trend of smaller and more powerful devices. [00181] In order to overcome and alleviate thermal issues in electronic and electrical devices, and in ele
| — |
Thickness | 3050–3700 cm | — |
Thickness | 1277–1383 cm | — |
Thickness | 755–760 cm | — |
— | 8.7–18 W | — |
Thickness | 200–800 nm | — |
Thickness | 80–200 nm | — |
Thickness | 1700-900 cm | — |
Thickness | 3000–3800 cm | — |
Thickness | 500–2000 cm | — |
Thickness | 20–30 nm | — |
Thickness | 10–20 nm | — |
Thickness | 10–60 nm | — |
Duration | 30–40 minutes | — |
Thickness | 2700–3700 cm | — |
Thickness | 1280–1380 cm | — |
Thickness | ≤ 5.5 nm | — |
Thickness | ≥ 3 mm | — |
Temperature | ≥ 1700 °C | — |