Process of producing multilayer-coated composite powder
US4309457A · kind A · utility
19Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1979 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Oct 11, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A multilayer-coated composite powder is produced by a first step of treating a core powder to be coated with first metallic ions and a metallic powder for reducing the first ions and thereby forming a single-layer coated powder, and a second step of treating the single-layer-coated powder with either only second metallic ions other than the first metallic ions or the second ions in the presence of a metallic powder for reducing the second ions. Where necessary, the second step is repeated the number of times required for forming a predetermined number of coating layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.