Double-metal-coated metal sulfide powder and process of producing the same
US4243728A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1978 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Nov 28, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A double-metal-coated metal sulfide powder comprises particles of a metal sulfide, a layer of a platinum group metal coating formed thereon, and an outer coating layer of a metal or alloy which contains at least one of iron, copper, nickel, and cobalt. The powder is obtained by forming a platinum group metal layer on metal sulfide particles by thermal decomposition of a plating composition which includes at least one platinum-metal compound containing a radical selected from the class consisting of NO, NO.sub.2, NO.sub.3, and NOCl and then forming a layer of at least one metal selected from the group consisting of iron, copper, nickel, and cobalt by the cementation reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.