Single-crystal diamond of very high thermal conductivity
US5419276A · kind A · utility
23Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1993 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | Dec 6, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2203/0685
- 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 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.