Method for manufacturing diamond coatings
US7118782B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2003 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | Jul 28, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B29/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of manufacturing diamond coatings, at low temperature and low pressure on a substrate utilizing chemical vapor transport (CVT) comprising the steps of: providing a wire-wrapped graphite assembly component and the substrate into a chamber; filling the chamber with hydrogen; reducing ambient pressure in the chamber to a vacuum and backfilling with hydrogen; sealing the chamber containing hydrogen at a pressure less than 1 atmosphere; and passing electric current through the graphite rod until the substrate is heated within a range of 125° C.–750° C. to produce high-quality diamond at temperatures with exceptional properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.