Tungsten alloys containing A15 structure and method for making same
US4427445A · kind A · utility
16Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1982 |
| Grant date | Jan 24, 1984 |
| Priority date | — |
| Expiry date | Jul 21, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C16/32
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A hard fine-grained internally stressed material of tungsten and carbon or tungsten, carbon and oxygen is described which is produced by thermochemical deposition. The material consists primarily of a two phase mixture of pure tungsten and an A15 structure, is free of columnar grain distribution, and has a hardness of greater than 1,200 VHN. The average grain size is less than 0.1 micron.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.