Alloy for electrical contacts and electrodes and method of making
US6375708B1 · kind B1 · utility
2Cited by
5References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2000 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Aug 31, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/092
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A W—Cu—Ni alloy having thermophysical properties suitable for use in electrical contacts and electrodes is described. The alloy is formed by direct sintering of a powder blend comprising a tungsten-copper composite powder and a nickel powder. The tungsten-copper composite powder component of the blend comprises individual dual phase particles having a copper phase and a tungsten phase wherein the tungsten phase substantially encapsulates the copper phase. The method for direct sintering the W—Cu—Ni alloy substantially eliminates the formation of brittle intermetallics and slumping during sintering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.