Single-crystal diamond of very high thermal conductivity

Details Single-crystal diamond of very high thermal conductivity Single-crystal diamond of very high thermal conductivity

C - Chemistry, Metallurgy

30

B

C30B 29/04 (2006.01) C30B 31/04 (2006.01)

Patent

CA 2042267

RD-20142 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 comminution of diamond of high isotopic purity, such as that obtained by low pressure chemical vapor deposition employing an isotopically pure hydrocarbon in combination with hydrogen, followed by conversion of the comminuted diamond to single-crystal diamond under high pressure conditions.

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