Method of making metal composite powders
US5529804A · kind A · utility
25Cited by
3References
18Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 29, 1995 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Mar 29, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F1/18
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for the production of hard materials wherein hard constituent powders are coated with cobalt and/or nickel metal in solution by reducing the metals from a suitable compound such as an oxide, hydroxide or salt with a polyol while keeping the powder in suspension. The polyol functions both as a solvent and a reducing agent at the same time and is present in an amount of at least 5 times more moles polyol than moles metal. There is obtained an even distribution of the cobalt and/or nickel over the surface of the hard constituent powder without the formation of islands of pure metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.