Impregnated compound metal as contact material for vacuum switches and method for its manufacture
US4014659A · kind A · utility
4Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1974 |
| Grant date | Mar 29, 1977 |
| Priority date | — |
| Expiry date | Oct 31, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1216
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An impregnated compound metal is provided comprising a metal matrix comprising a metallic main constituent having a melting point above 1400.degree. C and a metallic embrittlement additive impregnated with an impregnating metal or metal alloy, brittle intermetallic phases or mixed crystals forming between the main constituent and the embrittlement additive at sintering temperatures above 1200.degree. C. The percentage of embrittlement additive relative to the main constituent is 0.5 to 10 percent by weight. The melting points of all constituents are above 2000.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.