Patent
US 12,515,997 B2INFILTRATING BORON NITRIDE INTO A CARBON-CARBON SUBSTRATE
Jecee Jarman, Lauren Bartolo
GOODRICH CORPORATION, Charlotte, NC (US)·Jan. 6, 2026·US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 12,515,997 B2Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1A illustrates an exemplary aircraft having a brake 50 system, in accordance with various embodiments.
FIG. 2 illustrates a fibrous preform utilized to manufac- ture a carbon/carbon (C/C) disk, in accordance with various 55 embodiments.
FIG. 3 illustrates a fibrous preform utilized to manufac- ture a carbon/carbon (C/C) disk in a carbonization furnace, in accordance with various embodiments.
FIG. 4 illustrates a flowchart of a method for generating 60 boron nitride (BN) in order to infiltrate carbon fibers of the fibrous preform or the fibrous preform …
FIG. 5 illustrates a flowchart of a method for coating or impregnating starting carbon fibers to create a carbon/carbon 65 (C/C) disk with boron nitride (BN) …
FIG. 6 illustrates a flowchart of a method for coating or impregnating carbonized preforms to create a carbon/carbon (C/C) disk with boron nitride (BN) doping, …
FIG. 7 illustrates a flowchart of a method for coating or impregnating a densified carbon/carbon (C/C) disk with boron nitride (BN) doping, in accordance with …
FIGS. 8, 9, 10, and 11 illustrate boron nitride (BN) particulate application process, in accordance with various embodiments.
FIG. 9, the set of starting carbon fibers 802 used to form a fibrous preform may be sprayed with BN particulates 812. For example, a nozzle 902 may spray the BN …
FIGS. 10 and 11. In various embodi- ments, the BN precursor impregnation process includes generation of the BN precursor and immersing the formed fibrous …
FIG. 11, the formed fiber preform 1002 may be sprayed with BN particulates 812. For example, nozzle 902 may spray the BN particulates 812 onto the formed fiber …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for forming a carbon/carbon (C/C) disk with boron nitride (BN) doping, the method comprising: generating borazine using a set of borazine precursors; coating or impregnating starting carbon fibers with the borazine in an inert atmosphere, wherein an amount of borazine used to coat or infiltrate the starting carbon fibers is between 0.05 percent to 25 percent of a total weight of the starting carbon fibers; needling the starting carbon fibers into layered fabric and then needling the layered fabric into boards from which a preform is cut, the needling and cutting performed in the inert atmosphere; stabilizing the borazine in the preform to convert the borazine to polyborazylene, wherein the stabilizing is performed by heating the preform at a first temperature for a first predetermined time period, wherein the first temperature is between 40° C. (104° F.) to 60° C. (140° F.); curing the polyborazylene in the preform; crystalizing the polyborazylene in the preform to form BN particulates, wherein the crystalizing is performed by heating the preform at a second temperature for a second predetermined time period, causing the polyborazylene to form the BN particulates; and densifying the BN particulates in the preform with pyro-lytic carbon.
The method of claim 1, wherein the coating or impreg-nating is performed via spraying or dunking in a bath.
The method of claim 1, wherein the borazine is formed by the method comprising: mixing the set of borazine precursors with a high-tem-perature solvent thereby forming a mixture; heating the mixture to a third temperature; capturing off gases emitted by the mixing and heating; and condensing the off gases to liquify the borazine.
The method of claim 1, wherein the first predetermined time period is between 170 hours and 210 hours.
The method of claim 1, wherein the curing is performed at a third temperature for a third predetermined time period, wherein the third temperature is between 180° C. (356° F.) to 220° C. (428° F.), and wherein the third predetermined time period is between 2 hours and 3 hours.
The method of claim 1, wherein the second temperature is between 1200° C. (2192° F.) to 2000° C. (3632° F.), and wherein the second predetermined time period is between 2 hours and 5 hours.
A method for forming a carbon/carbon (C/C) disk with boron nitride (BN) doping, the method comprising: generating borazine using a set of borazine precursors; coating or impregnating a carbonized carbon preform with the borazine in an inert atmosphere, wherein an amount of borazine used to coat or infiltrate the car-bonized carbon preform is between 0.05 percent to percent of a total weight of the carbonized carbon preform; stabilizing the borazine in the carbonized carbon preform to convert the borazine to polyborazylene, wherein the stabilizing performed by heating the carbonized carbon preform at a first temperature for a first predetermined time period, wherein the first temperature is between 40° C. (104° F.) to 60° C. (140° F.); curing the polyborazylene in the carbonized carbon preform; crystalizing the polyborazylene in the carbonized carbon preform to form BN particulates, wherein the crystal-izing is performed by heating the preform at a second temperature for a second predetermined time period, causing the polyborazylene to form the BN particu-lates; and densifying the BN particulates in the carbonized carbon preform with pyrolytic carbon.
The method of claim 9, wherein the coating or impregnating is performed via spraying or dunking in a bath.
The method of claim 9, wherein the borazine is formed by the method comprising: mixing the set of borazine precursors with a high-tem-perature solvent thereby forming a mixture; heating the mixture to a third temperature; capturing off gases emitted by the mixing and heating; and condensing the off gases to liquify the borazine, wherein the set of borazine precursors comprise ammo-nium sulfate ((NH₄)2SO₄) and sodium borohydride (NaBH₄), wherein the high-temperature solvent is tetraethylene glycol dimethyl ether, i.e. tetraglyme, and wherein the third temperature is between 135° C. (275° F.) and 150° C. (302° F.).
The method of claim 9, wherein the first predeter-mined time period is between 170 hours and 210 hours.
The method of claim 9, wherein the curing is performed at a third temperature for 25 a third predetermined time period, wherein the third temperature is between 180° C. (356° F.) to 220° C. (428° F.), and wherein the third predetermined time period is between 2 hours and 3 hours, and wherein the second temperature is between 1200° C. (2192° F.) to 2000° C. (3632° F.), and wherein the second predetermined time period is between 2 hours and 5 hours.
The method of claim 9, wherein the carbonized carbon preform is formed by: needling uncoated carbon fiber into layered fabric and then needling the layered fabric into boards from which a preform is cut, the needling and cutting performed without BN doping; and carbonizing the preform made of uncoated carbon fibers to form a carbonized carbon preform.
A method for forming a carbon/carbon (C/C) disk with boron nitride (BN) doping, the method comprising: needling uncoated starting carbon fiber into layered fabric and then needling the layered fabric into boards from which a preform is cut, the needling and cutting per-formed without BN doping; carbonizing the preform made of uncoated carbon fibers to form a carbonized carbon preform; densifying the carbonized carbon preform with pyrolytic carbon thereby create a densified C/C disk; generating borazine using a set of borazine precursors; coating or impregnating the densified C/C disk with the borazine in an inert atmosphere, wherein an amount of borazine used to coat or infiltrate the densified C/C disk is between 0.05 percent to 25 percent of a total weight of the densified C/C disk; stabilizing the borazine in the densified C/C disk to convert the borazine to polyborazylene, wherein the stabilizing performed by heating the preform at a first temperature for a first predetermined time period, wherein the first temperature is between 40° C. (104° F.) to 60° C. (140° F.); curing the polyborazylene in the densified C/C disk; and crystalizing the polyborazylene in the densified C/C disk to form BN particulates, wherein the crystalizing is performed by heating the preform at a second tempera-ture for a second predetermined time period, causing the polyborazylene to form the BN particulates.
The method of claim 15, wherein the coating or impregnating is performed via spraying or dunking in a bath.
The method of claim 15, wherein the borazine is formed by the method comprising: mixing the set of borazine precursors with a high-tem-perature solvent thereby forming a mixture; heating the mixture to a third temperature; capturing off gases emitted by the mixing and heating; and condensing the off gases to liquify the borazine, wherein the set of borazine precursors comprise ammo-nium sulfate ((NH₄)2SO₄) and sodium borohydride (NaBH₄), wherein the high-temperature solvent is tetraethylene glycol dimethyl ether, i.e. tetraglyme, and wherein the third temperature is between 135° C. (275° F.) and 150° C. (302° F.).
The method of claim 15, wherein the first predeter-mined time period is between 170 hours and 210 hours.
The method of claim 15, wherein the curing is performed at a third temperature for a third predetermined time period, wherein the third temperature is between 180° C. (356° F.) to 220° C. (428° F.), and wherein the third predetermined time period is between 2 hours and 3 hours.
The method of claim 15, wherein the second tem-perature is between 1200° C. (2192° F.) to 2000° C. (3632° F.), wherein the second predetermined time period is between 2 hours and 5 hours. ∗ ∗ ∗ ∗ ∗
Layer stacks claimed or described, ordered top of device to substrate.
carbon/carbon disk with BN doping
Materials described outside the worked examples.
borazine
B₃H₆N₃
carbon fibers
polyborazylene
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 150–210 hours | — |
Duration | 180–200 hours |
Patents and literature cited by this patent (applicant and examiner references).
Cited patents · 9
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 12,515,997 B2Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1A illustrates an exemplary aircraft having a brake 50 system, in accordance with various embodiments.
FIG. 2 illustrates a fibrous preform utilized to manufac- ture a carbon/carbon (C/C) disk, in accordance with various 55 embodiments.
FIG. 3 illustrates a fibrous preform utilized to manufac- ture a carbon/carbon (C/C) disk in a carbonization furnace, in accordance with various embodiments.
FIG. 4 illustrates a flowchart of a method for generating 60 boron nitride (BN) in order to infiltrate carbon fibers of the fibrous preform or the fibrous preform …
FIG. 5 illustrates a flowchart of a method for coating or impregnating starting carbon fibers to create a carbon/carbon 65 (C/C) disk with boron nitride (BN) …
FIG. 6 illustrates a flowchart of a method for coating or impregnating carbonized preforms to create a carbon/carbon (C/C) disk with boron nitride (BN) doping, …
FIG. 7 illustrates a flowchart of a method for coating or impregnating a densified carbon/carbon (C/C) disk with boron nitride (BN) doping, in accordance with …
FIGS. 8, 9, 10, and 11 illustrate boron nitride (BN) particulate application process, in accordance with various embodiments.
FIG. 9, the set of starting carbon fibers 802 used to form a fibrous preform may be sprayed with BN particulates 812. For example, a nozzle 902 may spray the BN …
FIGS. 10 and 11. In various embodi- ments, the BN precursor impregnation process includes generation of the BN precursor and immersing the formed fibrous …
FIG. 11, the formed fiber preform 1002 may be sprayed with BN particulates 812. For example, nozzle 902 may spray the BN particulates 812 onto the formed fiber …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for forming a carbon/carbon (C/C) disk with boron nitride (BN) doping, the method comprising: generating borazine using a set of borazine precursors; coating or impregnating starting carbon fibers with the borazine in an inert atmosphere, wherein an amount of borazine used to coat or infiltrate the starting carbon fibers is between 0.05 percent to 25 percent of a total weight of the starting carbon fibers; needling the starting carbon fibers into layered fabric and then needling the layered fabric into boards from which a preform is cut, the needling and cutting performed in the inert atmosphere; stabilizing the borazine in the preform to convert the borazine to polyborazylene, wherein the stabilizing is performed by heating the preform at a first temperature for a first predetermined time period, wherein the first temperature is between 40° C. (104° F.) to 60° C. (140° F.); curing the polyborazylene in the preform; crystalizing the polyborazylene in the preform to form BN particulates, wherein the crystalizing is performed by heating the preform at a second temperature for a second predetermined time period, causing the polyborazylene to form the BN particulates; and densifying the BN particulates in the preform with pyro-lytic carbon.
The method of claim 1, wherein the coating or impreg-nating is performed via spraying or dunking in a bath.
The method of claim 1, wherein the borazine is formed by the method comprising: mixing the set of borazine precursors with a high-tem-perature solvent thereby forming a mixture; heating the mixture to a third temperature; capturing off gases emitted by the mixing and heating; and condensing the off gases to liquify the borazine.
The method of claim 1, wherein the first predetermined time period is between 170 hours and 210 hours.
The method of claim 1, wherein the curing is performed at a third temperature for a third predetermined time period, wherein the third temperature is between 180° C. (356° F.) to 220° C. (428° F.), and wherein the third predetermined time period is between 2 hours and 3 hours.
The method of claim 1, wherein the second temperature is between 1200° C. (2192° F.) to 2000° C. (3632° F.), and wherein the second predetermined time period is between 2 hours and 5 hours.
A method for forming a carbon/carbon (C/C) disk with boron nitride (BN) doping, the method comprising: generating borazine using a set of borazine precursors; coating or impregnating a carbonized carbon preform with the borazine in an inert atmosphere, wherein an amount of borazine used to coat or infiltrate the car-bonized carbon preform is between 0.05 percent to percent of a total weight of the carbonized carbon preform; stabilizing the borazine in the carbonized carbon preform to convert the borazine to polyborazylene, wherein the stabilizing performed by heating the carbonized carbon preform at a first temperature for a first predetermined time period, wherein the first temperature is between 40° C. (104° F.) to 60° C. (140° F.); curing the polyborazylene in the carbonized carbon preform; crystalizing the polyborazylene in the carbonized carbon preform to form BN particulates, wherein the crystal-izing is performed by heating the preform at a second temperature for a second predetermined time period, causing the polyborazylene to form the BN particu-lates; and densifying the BN particulates in the carbonized carbon preform with pyrolytic carbon.
The method of claim 9, wherein the coating or impregnating is performed via spraying or dunking in a bath.
The method of claim 9, wherein the borazine is formed by the method comprising: mixing the set of borazine precursors with a high-tem-perature solvent thereby forming a mixture; heating the mixture to a third temperature; capturing off gases emitted by the mixing and heating; and condensing the off gases to liquify the borazine, wherein the set of borazine precursors comprise ammo-nium sulfate ((NH₄)2SO₄) and sodium borohydride (NaBH₄), wherein the high-temperature solvent is tetraethylene glycol dimethyl ether, i.e. tetraglyme, and wherein the third temperature is between 135° C. (275° F.) and 150° C. (302° F.).
The method of claim 9, wherein the first predeter-mined time period is between 170 hours and 210 hours.
The method of claim 9, wherein the curing is performed at a third temperature for 25 a third predetermined time period, wherein the third temperature is between 180° C. (356° F.) to 220° C. (428° F.), and wherein the third predetermined time period is between 2 hours and 3 hours, and wherein the second temperature is between 1200° C. (2192° F.) to 2000° C. (3632° F.), and wherein the second predetermined time period is between 2 hours and 5 hours.
The method of claim 9, wherein the carbonized carbon preform is formed by: needling uncoated carbon fiber into layered fabric and then needling the layered fabric into boards from which a preform is cut, the needling and cutting performed without BN doping; and carbonizing the preform made of uncoated carbon fibers to form a carbonized carbon preform.
A method for forming a carbon/carbon (C/C) disk with boron nitride (BN) doping, the method comprising: needling uncoated starting carbon fiber into layered fabric and then needling the layered fabric into boards from which a preform is cut, the needling and cutting per-formed without BN doping; carbonizing the preform made of uncoated carbon fibers to form a carbonized carbon preform; densifying the carbonized carbon preform with pyrolytic carbon thereby create a densified C/C disk; generating borazine using a set of borazine precursors; coating or impregnating the densified C/C disk with the borazine in an inert atmosphere, wherein an amount of borazine used to coat or infiltrate the densified C/C disk is between 0.05 percent to 25 percent of a total weight of the densified C/C disk; stabilizing the borazine in the densified C/C disk to convert the borazine to polyborazylene, wherein the stabilizing performed by heating the preform at a first temperature for a first predetermined time period, wherein the first temperature is between 40° C. (104° F.) to 60° C. (140° F.); curing the polyborazylene in the densified C/C disk; and crystalizing the polyborazylene in the densified C/C disk to form BN particulates, wherein the crystalizing is performed by heating the preform at a second tempera-ture for a second predetermined time period, causing the polyborazylene to form the BN particulates.
The method of claim 15, wherein the coating or impregnating is performed via spraying or dunking in a bath.
The method of claim 15, wherein the borazine is formed by the method comprising: mixing the set of borazine precursors with a high-tem-perature solvent thereby forming a mixture; heating the mixture to a third temperature; capturing off gases emitted by the mixing and heating; and condensing the off gases to liquify the borazine, wherein the set of borazine precursors comprise ammo-nium sulfate ((NH₄)2SO₄) and sodium borohydride (NaBH₄), wherein the high-temperature solvent is tetraethylene glycol dimethyl ether, i.e. tetraglyme, and wherein the third temperature is between 135° C. (275° F.) and 150° C. (302° F.).
The method of claim 15, wherein the first predeter-mined time period is between 170 hours and 210 hours.
The method of claim 15, wherein the curing is performed at a third temperature for a third predetermined time period, wherein the third temperature is between 180° C. (356° F.) to 220° C. (428° F.), and wherein the third predetermined time period is between 2 hours and 3 hours.
The method of claim 15, wherein the second tem-perature is between 1200° C. (2192° F.) to 2000° C. (3632° F.), wherein the second predetermined time period is between 2 hours and 5 hours. ∗ ∗ ∗ ∗ ∗
Layer stacks claimed or described, ordered top of device to substrate.
carbon/carbon disk with BN doping
Materials described outside the worked examples.
borazine
B₃H₆N₃
carbon fibers
polyborazylene
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 150–210 hours | — |
Duration | 180–200 hours |
Patents and literature cited by this patent (applicant and examiner references).
Cited patents · 9
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 12,515,997 B2Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1A illustrates an exemplary aircraft having a brake 50 system, in accordance with various embodiments.
FIG. 2 illustrates a fibrous preform utilized to manufac- ture a carbon/carbon (C/C) disk, in accordance with various 55 embodiments.
FIG. 3 illustrates a fibrous preform utilized to manufac- ture a carbon/carbon (C/C) disk in a carbonization furnace, in accordance with various embodiments.
FIG. 4 illustrates a flowchart of a method for generating 60 boron nitride (BN) in order to infiltrate carbon fibers of the fibrous preform or the fibrous preform …
FIG. 5 illustrates a flowchart of a method for coating or impregnating starting carbon fibers to create a carbon/carbon 65 (C/C) disk with boron nitride (BN) …
FIG. 6 illustrates a flowchart of a method for coating or impregnating carbonized preforms to create a carbon/carbon (C/C) disk with boron nitride (BN) doping, …
FIG. 7 illustrates a flowchart of a method for coating or impregnating a densified carbon/carbon (C/C) disk with boron nitride (BN) doping, in accordance with …
FIGS. 8, 9, 10, and 11 illustrate boron nitride (BN) particulate application process, in accordance with various embodiments.
FIG. 9, the set of starting carbon fibers 802 used to form a fibrous preform may be sprayed with BN particulates 812. For example, a nozzle 902 may spray the BN …
FIGS. 10 and 11. In various embodi- ments, the BN precursor impregnation process includes generation of the BN precursor and immersing the formed fibrous …
FIG. 11, the formed fiber preform 1002 may be sprayed with BN particulates 812. For example, nozzle 902 may spray the BN particulates 812 onto the formed fiber …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for forming a carbon/carbon (C/C) disk with boron nitride (BN) doping, the method comprising: generating borazine using a set of borazine precursors; coating or impregnating starting carbon fibers with the borazine in an inert atmosphere, wherein an amount of borazine used to coat or infiltrate the starting carbon fibers is between 0.05 percent to 25 percent of a total weight of the starting carbon fibers; needling the starting carbon fibers into layered fabric and then needling the layered fabric into boards from which a preform is cut, the needling and cutting performed in the inert atmosphere; stabilizing the borazine in the preform to convert the borazine to polyborazylene, wherein the stabilizing is performed by heating the preform at a first temperature for a first predetermined time period, wherein the first temperature is between 40° C. (104° F.) to 60° C. (140° F.); curing the polyborazylene in the preform; crystalizing the polyborazylene in the preform to form BN particulates, wherein the crystalizing is performed by heating the preform at a second temperature for a second predetermined time period, causing the polyborazylene to form the BN particulates; and densifying the BN particulates in the preform with pyro-lytic carbon.
The method of claim 1, wherein the coating or impreg-nating is performed via spraying or dunking in a bath.
The method of claim 1, wherein the borazine is formed by the method comprising: mixing the set of borazine precursors with a high-tem-perature solvent thereby forming a mixture; heating the mixture to a third temperature; capturing off gases emitted by the mixing and heating; and condensing the off gases to liquify the borazine.
The method of claim 1, wherein the first predetermined time period is between 170 hours and 210 hours.
The method of claim 1, wherein the curing is performed at a third temperature for a third predetermined time period, wherein the third temperature is between 180° C. (356° F.) to 220° C. (428° F.), and wherein the third predetermined time period is between 2 hours and 3 hours.
The method of claim 1, wherein the second temperature is between 1200° C. (2192° F.) to 2000° C. (3632° F.), and wherein the second predetermined time period is between 2 hours and 5 hours.
A method for forming a carbon/carbon (C/C) disk with boron nitride (BN) doping, the method comprising: generating borazine using a set of borazine precursors; coating or impregnating a carbonized carbon preform with the borazine in an inert atmosphere, wherein an amount of borazine used to coat or infiltrate the car-bonized carbon preform is between 0.05 percent to percent of a total weight of the carbonized carbon preform; stabilizing the borazine in the carbonized carbon preform to convert the borazine to polyborazylene, wherein the stabilizing performed by heating the carbonized carbon preform at a first temperature for a first predetermined time period, wherein the first temperature is between 40° C. (104° F.) to 60° C. (140° F.); curing the polyborazylene in the carbonized carbon preform; crystalizing the polyborazylene in the carbonized carbon preform to form BN particulates, wherein the crystal-izing is performed by heating the preform at a second temperature for a second predetermined time period, causing the polyborazylene to form the BN particu-lates; and densifying the BN particulates in the carbonized carbon preform with pyrolytic carbon.
The method of claim 9, wherein the coating or impregnating is performed via spraying or dunking in a bath.
The method of claim 9, wherein the borazine is formed by the method comprising: mixing the set of borazine precursors with a high-tem-perature solvent thereby forming a mixture; heating the mixture to a third temperature; capturing off gases emitted by the mixing and heating; and condensing the off gases to liquify the borazine, wherein the set of borazine precursors comprise ammo-nium sulfate ((NH₄)2SO₄) and sodium borohydride (NaBH₄), wherein the high-temperature solvent is tetraethylene glycol dimethyl ether, i.e. tetraglyme, and wherein the third temperature is between 135° C. (275° F.) and 150° C. (302° F.).
The method of claim 9, wherein the first predeter-mined time period is between 170 hours and 210 hours.
The method of claim 9, wherein the curing is performed at a third temperature for 25 a third predetermined time period, wherein the third temperature is between 180° C. (356° F.) to 220° C. (428° F.), and wherein the third predetermined time period is between 2 hours and 3 hours, and wherein the second temperature is between 1200° C. (2192° F.) to 2000° C. (3632° F.), and wherein the second predetermined time period is between 2 hours and 5 hours.
The method of claim 9, wherein the carbonized carbon preform is formed by: needling uncoated carbon fiber into layered fabric and then needling the layered fabric into boards from which a preform is cut, the needling and cutting performed without BN doping; and carbonizing the preform made of uncoated carbon fibers to form a carbonized carbon preform.
A method for forming a carbon/carbon (C/C) disk with boron nitride (BN) doping, the method comprising: needling uncoated starting carbon fiber into layered fabric and then needling the layered fabric into boards from which a preform is cut, the needling and cutting per-formed without BN doping; carbonizing the preform made of uncoated carbon fibers to form a carbonized carbon preform; densifying the carbonized carbon preform with pyrolytic carbon thereby create a densified C/C disk; generating borazine using a set of borazine precursors; coating or impregnating the densified C/C disk with the borazine in an inert atmosphere, wherein an amount of borazine used to coat or infiltrate the densified C/C disk is between 0.05 percent to 25 percent of a total weight of the densified C/C disk; stabilizing the borazine in the densified C/C disk to convert the borazine to polyborazylene, wherein the stabilizing performed by heating the preform at a first temperature for a first predetermined time period, wherein the first temperature is between 40° C. (104° F.) to 60° C. (140° F.); curing the polyborazylene in the densified C/C disk; and crystalizing the polyborazylene in the densified C/C disk to form BN particulates, wherein the crystalizing is performed by heating the preform at a second tempera-ture for a second predetermined time period, causing the polyborazylene to form the BN particulates.
The method of claim 15, wherein the coating or impregnating is performed via spraying or dunking in a bath.
The method of claim 15, wherein the borazine is formed by the method comprising: mixing the set of borazine precursors with a high-tem-perature solvent thereby forming a mixture; heating the mixture to a third temperature; capturing off gases emitted by the mixing and heating; and condensing the off gases to liquify the borazine, wherein the set of borazine precursors comprise ammo-nium sulfate ((NH₄)2SO₄) and sodium borohydride (NaBH₄), wherein the high-temperature solvent is tetraethylene glycol dimethyl ether, i.e. tetraglyme, and wherein the third temperature is between 135° C. (275° F.) and 150° C. (302° F.).
The method of claim 15, wherein the first predeter-mined time period is between 170 hours and 210 hours.
The method of claim 15, wherein the curing is performed at a third temperature for a third predetermined time period, wherein the third temperature is between 180° C. (356° F.) to 220° C. (428° F.), and wherein the third predetermined time period is between 2 hours and 3 hours.
The method of claim 15, wherein the second tem-perature is between 1200° C. (2192° F.) to 2000° C. (3632° F.), wherein the second predetermined time period is between 2 hours and 5 hours. ∗ ∗ ∗ ∗ ∗
Layer stacks claimed or described, ordered top of device to substrate.
carbon/carbon disk with BN doping
Materials described outside the worked examples.
borazine
B₃H₆N₃
carbon fibers
polyborazylene
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 150–210 hours | — |
Duration | 180–200 hours |
Patents and literature cited by this patent (applicant and examiner references).
Cited patents · 9
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 12,515,997 B2Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1A illustrates an exemplary aircraft having a brake 50 system, in accordance with various embodiments.
FIG. 2 illustrates a fibrous preform utilized to manufac- ture a carbon/carbon (C/C) disk, in accordance with various 55 embodiments.
FIG. 3 illustrates a fibrous preform utilized to manufac- ture a carbon/carbon (C/C) disk in a carbonization furnace, in accordance with various embodiments.
FIG. 4 illustrates a flowchart of a method for generating 60 boron nitride (BN) in order to infiltrate carbon fibers of the fibrous preform or the fibrous preform …
FIG. 5 illustrates a flowchart of a method for coating or impregnating starting carbon fibers to create a carbon/carbon 65 (C/C) disk with boron nitride (BN) …
FIG. 6 illustrates a flowchart of a method for coating or impregnating carbonized preforms to create a carbon/carbon (C/C) disk with boron nitride (BN) doping, …
FIG. 7 illustrates a flowchart of a method for coating or impregnating a densified carbon/carbon (C/C) disk with boron nitride (BN) doping, in accordance with …
FIGS. 8, 9, 10, and 11 illustrate boron nitride (BN) particulate application process, in accordance with various embodiments.
FIG. 9, the set of starting carbon fibers 802 used to form a fibrous preform may be sprayed with BN particulates 812. For example, a nozzle 902 may spray the BN …
FIGS. 10 and 11. In various embodi- ments, the BN precursor impregnation process includes generation of the BN precursor and immersing the formed fibrous …
FIG. 11, the formed fiber preform 1002 may be sprayed with BN particulates 812. For example, nozzle 902 may spray the BN particulates 812 onto the formed fiber …
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A method for forming a carbon/carbon (C/C) disk with boron nitride (BN) doping, the method comprising: generating borazine using a set of borazine precursors; coating or impregnating starting carbon fibers with the borazine in an inert atmosphere, wherein an amount of borazine used to coat or infiltrate the starting carbon fibers is between 0.05 percent to 25 percent of a total weight of the starting carbon fibers; needling the starting carbon fibers into layered fabric and then needling the layered fabric into boards from which a preform is cut, the needling and cutting performed in the inert atmosphere; stabilizing the borazine in the preform to convert the borazine to polyborazylene, wherein the stabilizing is performed by heating the preform at a first temperature for a first predetermined time period, wherein the first temperature is between 40° C. (104° F.) to 60° C. (140° F.); curing the polyborazylene in the preform; crystalizing the polyborazylene in the preform to form BN particulates, wherein the crystalizing is performed by heating the preform at a second temperature for a second predetermined time period, causing the polyborazylene to form the BN particulates; and densifying the BN particulates in the preform with pyro-lytic carbon.
The method of claim 1, wherein the coating or impreg-nating is performed via spraying or dunking in a bath.
The method of claim 1, wherein the borazine is formed by the method comprising: mixing the set of borazine precursors with a high-tem-perature solvent thereby forming a mixture; heating the mixture to a third temperature; capturing off gases emitted by the mixing and heating; and condensing the off gases to liquify the borazine.
The method of claim 1, wherein the first predetermined time period is between 170 hours and 210 hours.
The method of claim 1, wherein the curing is performed at a third temperature for a third predetermined time period, wherein the third temperature is between 180° C. (356° F.) to 220° C. (428° F.), and wherein the third predetermined time period is between 2 hours and 3 hours.
The method of claim 1, wherein the second temperature is between 1200° C. (2192° F.) to 2000° C. (3632° F.), and wherein the second predetermined time period is between 2 hours and 5 hours.
A method for forming a carbon/carbon (C/C) disk with boron nitride (BN) doping, the method comprising: generating borazine using a set of borazine precursors; coating or impregnating a carbonized carbon preform with the borazine in an inert atmosphere, wherein an amount of borazine used to coat or infiltrate the car-bonized carbon preform is between 0.05 percent to percent of a total weight of the carbonized carbon preform; stabilizing the borazine in the carbonized carbon preform to convert the borazine to polyborazylene, wherein the stabilizing performed by heating the carbonized carbon preform at a first temperature for a first predetermined time period, wherein the first temperature is between 40° C. (104° F.) to 60° C. (140° F.); curing the polyborazylene in the carbonized carbon preform; crystalizing the polyborazylene in the carbonized carbon preform to form BN particulates, wherein the crystal-izing is performed by heating the preform at a second temperature for a second predetermined time period, causing the polyborazylene to form the BN particu-lates; and densifying the BN particulates in the carbonized carbon preform with pyrolytic carbon.
The method of claim 9, wherein the coating or impregnating is performed via spraying or dunking in a bath.
The method of claim 9, wherein the borazine is formed by the method comprising: mixing the set of borazine precursors with a high-tem-perature solvent thereby forming a mixture; heating the mixture to a third temperature; capturing off gases emitted by the mixing and heating; and condensing the off gases to liquify the borazine, wherein the set of borazine precursors comprise ammo-nium sulfate ((NH₄)2SO₄) and sodium borohydride (NaBH₄), wherein the high-temperature solvent is tetraethylene glycol dimethyl ether, i.e. tetraglyme, and wherein the third temperature is between 135° C. (275° F.) and 150° C. (302° F.).
The method of claim 9, wherein the first predeter-mined time period is between 170 hours and 210 hours.
The method of claim 9, wherein the curing is performed at a third temperature for 25 a third predetermined time period, wherein the third temperature is between 180° C. (356° F.) to 220° C. (428° F.), and wherein the third predetermined time period is between 2 hours and 3 hours, and wherein the second temperature is between 1200° C. (2192° F.) to 2000° C. (3632° F.), and wherein the second predetermined time period is between 2 hours and 5 hours.
The method of claim 9, wherein the carbonized carbon preform is formed by: needling uncoated carbon fiber into layered fabric and then needling the layered fabric into boards from which a preform is cut, the needling and cutting performed without BN doping; and carbonizing the preform made of uncoated carbon fibers to form a carbonized carbon preform.
A method for forming a carbon/carbon (C/C) disk with boron nitride (BN) doping, the method comprising: needling uncoated starting carbon fiber into layered fabric and then needling the layered fabric into boards from which a preform is cut, the needling and cutting per-formed without BN doping; carbonizing the preform made of uncoated carbon fibers to form a carbonized carbon preform; densifying the carbonized carbon preform with pyrolytic carbon thereby create a densified C/C disk; generating borazine using a set of borazine precursors; coating or impregnating the densified C/C disk with the borazine in an inert atmosphere, wherein an amount of borazine used to coat or infiltrate the densified C/C disk is between 0.05 percent to 25 percent of a total weight of the densified C/C disk; stabilizing the borazine in the densified C/C disk to convert the borazine to polyborazylene, wherein the stabilizing performed by heating the preform at a first temperature for a first predetermined time period, wherein the first temperature is between 40° C. (104° F.) to 60° C. (140° F.); curing the polyborazylene in the densified C/C disk; and crystalizing the polyborazylene in the densified C/C disk to form BN particulates, wherein the crystalizing is performed by heating the preform at a second tempera-ture for a second predetermined time period, causing the polyborazylene to form the BN particulates.
The method of claim 15, wherein the coating or impregnating is performed via spraying or dunking in a bath.
The method of claim 15, wherein the borazine is formed by the method comprising: mixing the set of borazine precursors with a high-tem-perature solvent thereby forming a mixture; heating the mixture to a third temperature; capturing off gases emitted by the mixing and heating; and condensing the off gases to liquify the borazine, wherein the set of borazine precursors comprise ammo-nium sulfate ((NH₄)2SO₄) and sodium borohydride (NaBH₄), wherein the high-temperature solvent is tetraethylene glycol dimethyl ether, i.e. tetraglyme, and wherein the third temperature is between 135° C. (275° F.) and 150° C. (302° F.).
The method of claim 15, wherein the first predeter-mined time period is between 170 hours and 210 hours.
The method of claim 15, wherein the curing is performed at a third temperature for a third predetermined time period, wherein the third temperature is between 180° C. (356° F.) to 220° C. (428° F.), and wherein the third predetermined time period is between 2 hours and 3 hours.
The method of claim 15, wherein the second tem-perature is between 1200° C. (2192° F.) to 2000° C. (3632° F.), wherein the second predetermined time period is between 2 hours and 5 hours. ∗ ∗ ∗ ∗ ∗
Layer stacks claimed or described, ordered top of device to substrate.
carbon/carbon disk with BN doping
Materials described outside the worked examples.
borazine
B₃H₆N₃
carbon fibers
polyborazylene
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Duration | 150–210 hours | — |
Duration | 180–200 hours |
Patents and literature cited by this patent (applicant and examiner references).
Cited patents · 9
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tetraethylene glycol dimethyl ether (tetraglyme)
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Duration | 2–3 hours | — |
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tetraethylene glycol dimethyl ether (tetraglyme)
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BN
pyrolytic carbon
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(NH₄)2SO₄
sodium borohydride
NaBH₄
tetraethylene glycol dimethyl ether (tetraglyme)
| — |
Duration | 2–3 hours | — |
Duration | 2–2.5 hours | — |
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Duration | 2–4 hours | — |
Temperature | ≥ 135 °C | — |
Duration | 170–210 hours | — |
Cited non-patent literature · 2
Effects of spin-orbit coupling in a valley chiral kagome network
boron nitride particulates
BN
pyrolytic carbon
ammonium sulfate
(NH₄)2SO₄
sodium borohydride
NaBH₄
tetraethylene glycol dimethyl ether (tetraglyme)
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Duration | 2–3 hours | — |
Duration | 2–2.5 hours | — |
Duration | 2–5 hours | — |
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Temperature | ≥ 135 °C | — |
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