Preparation of electroless nickel coating having improved properties
US5397599A · kind A · utility
6Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1994 |
| Grant date | Mar 14, 1995 |
| Priority date | — |
| Expiry date | Jan 26, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/181
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Increases in surface resistivity of electroless nickel coatings on polycarbonate-containing substrates are inhibited by employing two electroless nickel plating solutions. The first solution is one which deposits a metal layer containing phosphorus, if any, in an amount up to 5% by weight and is used to deposit a layer at least 0.5 micron thick. The second solution is one which deposits a layer containing phosphorus in the amount of at least 5% and preferably at least 6% by weight. Another metal layer may be interposed between the two nickel layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.