C - Chemistry – Metallurgy – 30 – B
Patent
C - Chemistry, Metallurgy
30
B
18/1124, 148/2.1
C30B 29/04 (2006.01) B01J 3/06 (2006.01) C01B 31/06 (2006.01) C30B 25/00 (2006.01) C30B 25/02 (2006.01)
Patent
CA 2030049
RD-18116 SINGLE-CRYSTAL DIAMOND OF VERY HIGH THERMAL CONDUCTIVITY Abstract Single-crystal diamond consisting of isotopically pure carbon-12 or carbon-13 has been found to have a thermal conductivity higher than that of any substance previously known, typically at least 40% higher than that of naturally occurring IIA diamond. It may be prepared by a method comprising an initial step of low pressure chemical vapor deposition employing an isotopically pure hydrocarbon in combination with hydrogen, followed by comminution of the diamond thus obtained and conversion thereof to single- crystal diamond under high pressure conditions.
Anthony Thomas R.
Banholzer William F.
Fleischer James F.
Company General Electric
Craig Wilson And Company
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