Electrical contact surface coating
US4895771A · kind A · utility
6Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1988 |
| Grant date | Jan 23, 1990 |
| Priority date | — |
| Expiry date | Jun 14, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12889
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A surface for providing an electrically conductive surface coating on an electrical contact body. The process resulting in such a coating comprises the steps of depositing upon the body surface in sequence, (a) a nickel layer, (b) a first gold layer, (c) a palladium/nickel alloy layer which may be an alloy containing nickel up to a proportion of 50% by weight, and (d) a second gold layer. All the layers may be deposited by an electrodeposition process. The resulting surface coating has excellent corrosion and wear resistance properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.