Single-crystal diamond of very high thermal conductivity
US5310447A · kind A · utility
5Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1991 |
| Grant date | May 10, 1994 |
| Priority date | — |
| Expiry date | Aug 12, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S117/915
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.