Composite electrical contact material of Ag-alloy matrix and internally oxidized dispersed phase
US4161403A · kind A · utility
13Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 22, 1978 |
| Grant date | Jul 17, 1979 |
| Priority date | — |
| Expiry date | Mar 22, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C32/0021
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Internally oxidized Ag-Sn alloy electrical contact materials have their electrical characteristics improved by being compounded with other Ag alloys containing metal elements which are in solid solution with Ag and are internally oxidizable. Compounds obtained in accordance with this invention include microscopic silver grain matrices containing Sn oxides and other silver grain matrices which contain metallic oxides of the said other Ag alloys and are intercoalesced with each other and with the first mentioned silver grain matrices, and present macroscopically improved electric characteristics as if they were a single alloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.