Deposition and thermal diffusion of borides and carbides of refractory metals
US6458218B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 16, 2001 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | Jan 16, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D5/605
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method is provided for depositing and thermally diffusing a boride or a carbide of a refractory metal on a substrate of a workpiece. A layer of the refractory metal is deposited on the substrate. At least one of the elements boron and carbon is deposited from a source other than the workpiece on the workpiece having the refractory metal layer. The workpiece is heated at a temperature and for a time period sufficient to diffuse at least a portion of the deposited refractory metal into the substrate and at least a portion of the deposited boron or carbon into the refractory metal layer and the substrate to form a substantially uniform and metallurgically bonded layer of the boride or carbide of the refractory metal on the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.