Patent
US 10,106,412Method for Preparing High-Density Hexagonal Boron Nitride Ceramic Material
Jianfeng Zhang
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,106,412Patent drawings and their descriptions. Click a drawing to enlarge it.
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 preparing a high-density hexagonal boron nitride (hBN) ceramic material, comprising: (1) adding hBN powder into deionized water, and stirring the hBN powder to obtain a mixture of hBN powder and deionized water; (2) adding ethanol dropwise into the mixture obtained through the step (1), causing the mass ratio of the dropwise added ethanol to the mixture to be 0.08-0.1; then, addin q ammonia water dropwise into the mixture to cause the pH of the solution to be 9-10; after the mixture is mixed, addin g mixed solution of tetraethyl orthosilicate and ethanol dropwise until the mole ratio of tetraethyl orthosilicate in the mixed solution to deionized water in the step (1) is (1:4)-(1:8); after the mixed solution is added dropwise, sealing the bottle, and continuing to reactfor5-20 h, wherein the drippin q speed of the ethanol is 1-10 m l/min, wherein the drippin g speed of ammonia water is 1-10 m l/min, and wherein the drippin q speed of the mixed solution of tetraeth v l orthosilicate and ethanol is 1-20 m l/min; (3) after the reaction in the step (2) is over, filtering the obtained powder, drying the powder, and grinding and sieving the powder; (4) pre-sintering the sieved powder obtained through the step (3) in a high vacuum furnace, and rinding and sieving the powder again after the pre-sintering; (5) subiectin q the powder obtained through the step (4) to cold isostatic press molding, then to high-temperature pressureless sintering in an atmosphere of N₂ for 1-3 h, so as to obtain a sample; and (6) after step (5), ooling the sample. Currently amended
The preparation method according to claim 1, wherein the purity of the hBN powder is greater than 98%, and the particle size of the hBN powder is not larger than 10 microns; and the mass ratio of the hBN powder to the deionized water is 0.008-0.015. Previously presented
The preparation method according to claim 1, wherein the stirring conditions in the step (1) are that magnetic stirring is performed, the stirring speed is 500-1000 rpm, and the stirring time is 1-10 h. Currently amended
The preparation method according to claim 1, wherein in the step (2), in the mixed solution of tetraethyl orthosilicate and ethanol, the mass ratio of tetraethyl orthosilicate to ethanol is (1:5)- (1:10). Original
The preparation method according to claim 1, wherein in the step (3), the conditions of powder drying are that the powder is dried for 10-30 h at 90-1 10*C; and the conditions of powder grinding are that the powder is sieved through a 200-mesh sieve 2-4 times. Original
7 The preparation method according to claim 1, wherein in the step (4), the conditions of powder pre-sintering are that the pre-sintering temperature is 700- 900 0C, and the pre-sintering time is 0.5-5 h; and the grinding conditions are that the powder is sieved through a 200-mesh sieve 2-4 times. Original
8 The preparation method according to claim 1, wherein in the step (5), the molding pressure of cold isostatic press molding is 100-200 MPa. Original
The preparation method according to claim 1, wherein in the step (5), the sintering temperature is 1600-1900 *C. Original
Canceled
A method for preparing a high-density hexagonal boron nitride (hBN) ceramic material, comprising: (1) adding hBN powder into deionized water, and stirring the hBN powder to obtain a mixture of hBN powder and deionized water; (2) adding ethanol dropwise into the mixture obtained through the step (1), causing the mass ratio of the dropwise added ethanol to the mixture to be 0.08-0.1; then, adding ammonia water dropwise into the mixture to cause the pH of the solution to be 9-10; after the mixture is mixed, adding mixed solution of tetraethyl orthosilicate and ethanol dropwise until the mole ratio of tetraethyl orthosilicate in the mixed solution to deionized water in the step (1) is (1:4)-(1:8); after the mixed solution is added dropwise, sealing the bottle, and continuing to react for 5-20 h; (3) after the reaction in the step (2) is over, filtering the obtained powder, drying the powder, and grinding and sieving the powder, wherein the powder is dried for 10-30 h at 90-1 100C, wherein the powder is sieved through a 200-mesh sieve 2-4 times; (4) pre-sintering the sieved powder obtained through the step (3) in a high vacuum furnace, and grinding and sieving the powder again after the pre-sintering; (5) subjecting the powder obtained through the step (4) to cold isostatic press molding, then to high-temperature pressureless sintering in an atmosphere of N₂ for 1-3 h, so as to obtain a sample; and (6) after step (5), cooling the sample. New
A method for preparing a high-density hexagonal boron nitride (hBN) ceramic material, comprising: (1) adding hBN powder into deionized water, and stirring the hBN powder to obtain a mixture of hBN powder and deionized water; (2) adding ethanol dropwise into the mixture obtained through the step (1), causing the mass ratio of the dropwise added ethanol to the mixture to be 0.08-0.1; then, adding ammonia water dropwise into the mixture to cause the pH of the solution to be 9-10; after the mixture is mixed, adding mixed solution of tetraethyl orthosilicate and ethanol dropwise until the mole ratio of tetraethyl orthosilicate in the mixed solution to deionized water in the step (1) is (1:4)-(1:8); after the mixed solution is added dropwise, sealing the bottle, and continuing to react for 5-20 h; (3) after the reaction in the step (2) is over, filtering the obtained powder, drying the powder, and grinding and sieving the powder; (4) pre-sintering the sieved powder obtained through the step (3) in a high vacuum furnace, and grinding and sieving the powder again after the pre-sintering, wherein the presintering temperature is 700-900 * C, wherein the pre-sintering time is 0.5-5 h, wherein the powder is sieved through a 200-mesh sieve 2-4 times; (5) subjecting the powder obtained through the step (4) to cold isostatic press molding, then to high-temperature pressureless sintering in an atmosphere of N₂ for 1-3 h, so as to obtain a sample; and (6) after step (5), cooling the sample. New
Materials described outside the worked examples.
hexagonal boron nitride powder
hBN
silicon dioxide sintering additive (SiO₂ nano-coating)
SiO₂
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
relative density of hBN ceramic material | >80% % | hBN-SiO₂ |
Pressure | 100–200 MPa |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,106,412Patent drawings and their descriptions. Click a drawing to enlarge it.
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 preparing a high-density hexagonal boron nitride (hBN) ceramic material, comprising: (1) adding hBN powder into deionized water, and stirring the hBN powder to obtain a mixture of hBN powder and deionized water; (2) adding ethanol dropwise into the mixture obtained through the step (1), causing the mass ratio of the dropwise added ethanol to the mixture to be 0.08-0.1; then, addin q ammonia water dropwise into the mixture to cause the pH of the solution to be 9-10; after the mixture is mixed, addin g mixed solution of tetraethyl orthosilicate and ethanol dropwise until the mole ratio of tetraethyl orthosilicate in the mixed solution to deionized water in the step (1) is (1:4)-(1:8); after the mixed solution is added dropwise, sealing the bottle, and continuing to reactfor5-20 h, wherein the drippin q speed of the ethanol is 1-10 m l/min, wherein the drippin g speed of ammonia water is 1-10 m l/min, and wherein the drippin q speed of the mixed solution of tetraeth v l orthosilicate and ethanol is 1-20 m l/min; (3) after the reaction in the step (2) is over, filtering the obtained powder, drying the powder, and grinding and sieving the powder; (4) pre-sintering the sieved powder obtained through the step (3) in a high vacuum furnace, and rinding and sieving the powder again after the pre-sintering; (5) subiectin q the powder obtained through the step (4) to cold isostatic press molding, then to high-temperature pressureless sintering in an atmosphere of N₂ for 1-3 h, so as to obtain a sample; and (6) after step (5), ooling the sample. Currently amended
The preparation method according to claim 1, wherein the purity of the hBN powder is greater than 98%, and the particle size of the hBN powder is not larger than 10 microns; and the mass ratio of the hBN powder to the deionized water is 0.008-0.015. Previously presented
The preparation method according to claim 1, wherein the stirring conditions in the step (1) are that magnetic stirring is performed, the stirring speed is 500-1000 rpm, and the stirring time is 1-10 h. Currently amended
The preparation method according to claim 1, wherein in the step (2), in the mixed solution of tetraethyl orthosilicate and ethanol, the mass ratio of tetraethyl orthosilicate to ethanol is (1:5)- (1:10). Original
The preparation method according to claim 1, wherein in the step (3), the conditions of powder drying are that the powder is dried for 10-30 h at 90-1 10*C; and the conditions of powder grinding are that the powder is sieved through a 200-mesh sieve 2-4 times. Original
7 The preparation method according to claim 1, wherein in the step (4), the conditions of powder pre-sintering are that the pre-sintering temperature is 700- 900 0C, and the pre-sintering time is 0.5-5 h; and the grinding conditions are that the powder is sieved through a 200-mesh sieve 2-4 times. Original
8 The preparation method according to claim 1, wherein in the step (5), the molding pressure of cold isostatic press molding is 100-200 MPa. Original
The preparation method according to claim 1, wherein in the step (5), the sintering temperature is 1600-1900 *C. Original
Canceled
A method for preparing a high-density hexagonal boron nitride (hBN) ceramic material, comprising: (1) adding hBN powder into deionized water, and stirring the hBN powder to obtain a mixture of hBN powder and deionized water; (2) adding ethanol dropwise into the mixture obtained through the step (1), causing the mass ratio of the dropwise added ethanol to the mixture to be 0.08-0.1; then, adding ammonia water dropwise into the mixture to cause the pH of the solution to be 9-10; after the mixture is mixed, adding mixed solution of tetraethyl orthosilicate and ethanol dropwise until the mole ratio of tetraethyl orthosilicate in the mixed solution to deionized water in the step (1) is (1:4)-(1:8); after the mixed solution is added dropwise, sealing the bottle, and continuing to react for 5-20 h; (3) after the reaction in the step (2) is over, filtering the obtained powder, drying the powder, and grinding and sieving the powder, wherein the powder is dried for 10-30 h at 90-1 100C, wherein the powder is sieved through a 200-mesh sieve 2-4 times; (4) pre-sintering the sieved powder obtained through the step (3) in a high vacuum furnace, and grinding and sieving the powder again after the pre-sintering; (5) subjecting the powder obtained through the step (4) to cold isostatic press molding, then to high-temperature pressureless sintering in an atmosphere of N₂ for 1-3 h, so as to obtain a sample; and (6) after step (5), cooling the sample. New
A method for preparing a high-density hexagonal boron nitride (hBN) ceramic material, comprising: (1) adding hBN powder into deionized water, and stirring the hBN powder to obtain a mixture of hBN powder and deionized water; (2) adding ethanol dropwise into the mixture obtained through the step (1), causing the mass ratio of the dropwise added ethanol to the mixture to be 0.08-0.1; then, adding ammonia water dropwise into the mixture to cause the pH of the solution to be 9-10; after the mixture is mixed, adding mixed solution of tetraethyl orthosilicate and ethanol dropwise until the mole ratio of tetraethyl orthosilicate in the mixed solution to deionized water in the step (1) is (1:4)-(1:8); after the mixed solution is added dropwise, sealing the bottle, and continuing to react for 5-20 h; (3) after the reaction in the step (2) is over, filtering the obtained powder, drying the powder, and grinding and sieving the powder; (4) pre-sintering the sieved powder obtained through the step (3) in a high vacuum furnace, and grinding and sieving the powder again after the pre-sintering, wherein the presintering temperature is 700-900 * C, wherein the pre-sintering time is 0.5-5 h, wherein the powder is sieved through a 200-mesh sieve 2-4 times; (5) subjecting the powder obtained through the step (4) to cold isostatic press molding, then to high-temperature pressureless sintering in an atmosphere of N₂ for 1-3 h, so as to obtain a sample; and (6) after step (5), cooling the sample. New
Materials described outside the worked examples.
hexagonal boron nitride powder
hBN
silicon dioxide sintering additive (SiO₂ nano-coating)
SiO₂
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
relative density of hBN ceramic material | >80% % | hBN-SiO₂ |
Pressure | 100–200 MPa |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,106,412Patent drawings and their descriptions. Click a drawing to enlarge it.
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 preparing a high-density hexagonal boron nitride (hBN) ceramic material, comprising: (1) adding hBN powder into deionized water, and stirring the hBN powder to obtain a mixture of hBN powder and deionized water; (2) adding ethanol dropwise into the mixture obtained through the step (1), causing the mass ratio of the dropwise added ethanol to the mixture to be 0.08-0.1; then, addin q ammonia water dropwise into the mixture to cause the pH of the solution to be 9-10; after the mixture is mixed, addin g mixed solution of tetraethyl orthosilicate and ethanol dropwise until the mole ratio of tetraethyl orthosilicate in the mixed solution to deionized water in the step (1) is (1:4)-(1:8); after the mixed solution is added dropwise, sealing the bottle, and continuing to reactfor5-20 h, wherein the drippin q speed of the ethanol is 1-10 m l/min, wherein the drippin g speed of ammonia water is 1-10 m l/min, and wherein the drippin q speed of the mixed solution of tetraeth v l orthosilicate and ethanol is 1-20 m l/min; (3) after the reaction in the step (2) is over, filtering the obtained powder, drying the powder, and grinding and sieving the powder; (4) pre-sintering the sieved powder obtained through the step (3) in a high vacuum furnace, and rinding and sieving the powder again after the pre-sintering; (5) subiectin q the powder obtained through the step (4) to cold isostatic press molding, then to high-temperature pressureless sintering in an atmosphere of N₂ for 1-3 h, so as to obtain a sample; and (6) after step (5), ooling the sample. Currently amended
The preparation method according to claim 1, wherein the purity of the hBN powder is greater than 98%, and the particle size of the hBN powder is not larger than 10 microns; and the mass ratio of the hBN powder to the deionized water is 0.008-0.015. Previously presented
The preparation method according to claim 1, wherein the stirring conditions in the step (1) are that magnetic stirring is performed, the stirring speed is 500-1000 rpm, and the stirring time is 1-10 h. Currently amended
The preparation method according to claim 1, wherein in the step (2), in the mixed solution of tetraethyl orthosilicate and ethanol, the mass ratio of tetraethyl orthosilicate to ethanol is (1:5)- (1:10). Original
The preparation method according to claim 1, wherein in the step (3), the conditions of powder drying are that the powder is dried for 10-30 h at 90-1 10*C; and the conditions of powder grinding are that the powder is sieved through a 200-mesh sieve 2-4 times. Original
7 The preparation method according to claim 1, wherein in the step (4), the conditions of powder pre-sintering are that the pre-sintering temperature is 700- 900 0C, and the pre-sintering time is 0.5-5 h; and the grinding conditions are that the powder is sieved through a 200-mesh sieve 2-4 times. Original
8 The preparation method according to claim 1, wherein in the step (5), the molding pressure of cold isostatic press molding is 100-200 MPa. Original
The preparation method according to claim 1, wherein in the step (5), the sintering temperature is 1600-1900 *C. Original
Canceled
A method for preparing a high-density hexagonal boron nitride (hBN) ceramic material, comprising: (1) adding hBN powder into deionized water, and stirring the hBN powder to obtain a mixture of hBN powder and deionized water; (2) adding ethanol dropwise into the mixture obtained through the step (1), causing the mass ratio of the dropwise added ethanol to the mixture to be 0.08-0.1; then, adding ammonia water dropwise into the mixture to cause the pH of the solution to be 9-10; after the mixture is mixed, adding mixed solution of tetraethyl orthosilicate and ethanol dropwise until the mole ratio of tetraethyl orthosilicate in the mixed solution to deionized water in the step (1) is (1:4)-(1:8); after the mixed solution is added dropwise, sealing the bottle, and continuing to react for 5-20 h; (3) after the reaction in the step (2) is over, filtering the obtained powder, drying the powder, and grinding and sieving the powder, wherein the powder is dried for 10-30 h at 90-1 100C, wherein the powder is sieved through a 200-mesh sieve 2-4 times; (4) pre-sintering the sieved powder obtained through the step (3) in a high vacuum furnace, and grinding and sieving the powder again after the pre-sintering; (5) subjecting the powder obtained through the step (4) to cold isostatic press molding, then to high-temperature pressureless sintering in an atmosphere of N₂ for 1-3 h, so as to obtain a sample; and (6) after step (5), cooling the sample. New
A method for preparing a high-density hexagonal boron nitride (hBN) ceramic material, comprising: (1) adding hBN powder into deionized water, and stirring the hBN powder to obtain a mixture of hBN powder and deionized water; (2) adding ethanol dropwise into the mixture obtained through the step (1), causing the mass ratio of the dropwise added ethanol to the mixture to be 0.08-0.1; then, adding ammonia water dropwise into the mixture to cause the pH of the solution to be 9-10; after the mixture is mixed, adding mixed solution of tetraethyl orthosilicate and ethanol dropwise until the mole ratio of tetraethyl orthosilicate in the mixed solution to deionized water in the step (1) is (1:4)-(1:8); after the mixed solution is added dropwise, sealing the bottle, and continuing to react for 5-20 h; (3) after the reaction in the step (2) is over, filtering the obtained powder, drying the powder, and grinding and sieving the powder; (4) pre-sintering the sieved powder obtained through the step (3) in a high vacuum furnace, and grinding and sieving the powder again after the pre-sintering, wherein the presintering temperature is 700-900 * C, wherein the pre-sintering time is 0.5-5 h, wherein the powder is sieved through a 200-mesh sieve 2-4 times; (5) subjecting the powder obtained through the step (4) to cold isostatic press molding, then to high-temperature pressureless sintering in an atmosphere of N₂ for 1-3 h, so as to obtain a sample; and (6) after step (5), cooling the sample. New
Materials described outside the worked examples.
hexagonal boron nitride powder
hBN
silicon dioxide sintering additive (SiO₂ nano-coating)
SiO₂
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
relative density of hBN ceramic material | >80% % | hBN-SiO₂ |
Pressure | 100–200 MPa |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,106,412Patent drawings and their descriptions. Click a drawing to enlarge it.
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 preparing a high-density hexagonal boron nitride (hBN) ceramic material, comprising: (1) adding hBN powder into deionized water, and stirring the hBN powder to obtain a mixture of hBN powder and deionized water; (2) adding ethanol dropwise into the mixture obtained through the step (1), causing the mass ratio of the dropwise added ethanol to the mixture to be 0.08-0.1; then, addin q ammonia water dropwise into the mixture to cause the pH of the solution to be 9-10; after the mixture is mixed, addin g mixed solution of tetraethyl orthosilicate and ethanol dropwise until the mole ratio of tetraethyl orthosilicate in the mixed solution to deionized water in the step (1) is (1:4)-(1:8); after the mixed solution is added dropwise, sealing the bottle, and continuing to reactfor5-20 h, wherein the drippin q speed of the ethanol is 1-10 m l/min, wherein the drippin g speed of ammonia water is 1-10 m l/min, and wherein the drippin q speed of the mixed solution of tetraeth v l orthosilicate and ethanol is 1-20 m l/min; (3) after the reaction in the step (2) is over, filtering the obtained powder, drying the powder, and grinding and sieving the powder; (4) pre-sintering the sieved powder obtained through the step (3) in a high vacuum furnace, and rinding and sieving the powder again after the pre-sintering; (5) subiectin q the powder obtained through the step (4) to cold isostatic press molding, then to high-temperature pressureless sintering in an atmosphere of N₂ for 1-3 h, so as to obtain a sample; and (6) after step (5), ooling the sample. Currently amended
The preparation method according to claim 1, wherein the purity of the hBN powder is greater than 98%, and the particle size of the hBN powder is not larger than 10 microns; and the mass ratio of the hBN powder to the deionized water is 0.008-0.015. Previously presented
The preparation method according to claim 1, wherein the stirring conditions in the step (1) are that magnetic stirring is performed, the stirring speed is 500-1000 rpm, and the stirring time is 1-10 h. Currently amended
The preparation method according to claim 1, wherein in the step (2), in the mixed solution of tetraethyl orthosilicate and ethanol, the mass ratio of tetraethyl orthosilicate to ethanol is (1:5)- (1:10). Original
The preparation method according to claim 1, wherein in the step (3), the conditions of powder drying are that the powder is dried for 10-30 h at 90-1 10*C; and the conditions of powder grinding are that the powder is sieved through a 200-mesh sieve 2-4 times. Original
7 The preparation method according to claim 1, wherein in the step (4), the conditions of powder pre-sintering are that the pre-sintering temperature is 700- 900 0C, and the pre-sintering time is 0.5-5 h; and the grinding conditions are that the powder is sieved through a 200-mesh sieve 2-4 times. Original
8 The preparation method according to claim 1, wherein in the step (5), the molding pressure of cold isostatic press molding is 100-200 MPa. Original
The preparation method according to claim 1, wherein in the step (5), the sintering temperature is 1600-1900 *C. Original
Canceled
A method for preparing a high-density hexagonal boron nitride (hBN) ceramic material, comprising: (1) adding hBN powder into deionized water, and stirring the hBN powder to obtain a mixture of hBN powder and deionized water; (2) adding ethanol dropwise into the mixture obtained through the step (1), causing the mass ratio of the dropwise added ethanol to the mixture to be 0.08-0.1; then, adding ammonia water dropwise into the mixture to cause the pH of the solution to be 9-10; after the mixture is mixed, adding mixed solution of tetraethyl orthosilicate and ethanol dropwise until the mole ratio of tetraethyl orthosilicate in the mixed solution to deionized water in the step (1) is (1:4)-(1:8); after the mixed solution is added dropwise, sealing the bottle, and continuing to react for 5-20 h; (3) after the reaction in the step (2) is over, filtering the obtained powder, drying the powder, and grinding and sieving the powder, wherein the powder is dried for 10-30 h at 90-1 100C, wherein the powder is sieved through a 200-mesh sieve 2-4 times; (4) pre-sintering the sieved powder obtained through the step (3) in a high vacuum furnace, and grinding and sieving the powder again after the pre-sintering; (5) subjecting the powder obtained through the step (4) to cold isostatic press molding, then to high-temperature pressureless sintering in an atmosphere of N₂ for 1-3 h, so as to obtain a sample; and (6) after step (5), cooling the sample. New
A method for preparing a high-density hexagonal boron nitride (hBN) ceramic material, comprising: (1) adding hBN powder into deionized water, and stirring the hBN powder to obtain a mixture of hBN powder and deionized water; (2) adding ethanol dropwise into the mixture obtained through the step (1), causing the mass ratio of the dropwise added ethanol to the mixture to be 0.08-0.1; then, adding ammonia water dropwise into the mixture to cause the pH of the solution to be 9-10; after the mixture is mixed, adding mixed solution of tetraethyl orthosilicate and ethanol dropwise until the mole ratio of tetraethyl orthosilicate in the mixed solution to deionized water in the step (1) is (1:4)-(1:8); after the mixed solution is added dropwise, sealing the bottle, and continuing to react for 5-20 h; (3) after the reaction in the step (2) is over, filtering the obtained powder, drying the powder, and grinding and sieving the powder; (4) pre-sintering the sieved powder obtained through the step (3) in a high vacuum furnace, and grinding and sieving the powder again after the pre-sintering, wherein the presintering temperature is 700-900 * C, wherein the pre-sintering time is 0.5-5 h, wherein the powder is sieved through a 200-mesh sieve 2-4 times; (5) subjecting the powder obtained through the step (4) to cold isostatic press molding, then to high-temperature pressureless sintering in an atmosphere of N₂ for 1-3 h, so as to obtain a sample; and (6) after step (5), cooling the sample. New
Materials described outside the worked examples.
hexagonal boron nitride powder
hBN
silicon dioxide sintering additive (SiO₂ nano-coating)
SiO₂
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
relative density of hBN ceramic material | >80% % | hBN-SiO₂ |
Pressure | 100–200 MPa |
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| — |
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NH3·H₂O
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