Single-crystal diamond of very high thermal conductivity
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United States of America Patent
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May 10, 1994
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app pub date -
Aug 12, 1991
filing date -
Dec 11, 1989
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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.
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