Method of making flowable tungsten/copper composite powder
US5439638A · kind A · utility
11Cited by
13References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1993 |
| Grant date | Aug 8, 1995 |
| Priority date | — |
| Expiry date | Jul 16, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A method of making flowable tungsten/copper composite powder by milling an aqueous slurry of a mixture of the desired weight ratio of tungsten powder and copper oxide powder and, optionally, a small amount of cobalt powder, spray-drying the slurry to form spherical, flowable agglomerates, and reducing the agglomerates in a hydrogen atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.