Electrical conductor made of copper-plated and tin-plated aluminum
US5965279A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 1997 |
| Grant date | Oct 12, 1999 |
| Priority date | — |
| Expiry date | Mar 13, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12903
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An electrical conductor consisting of an at least partially aluminium-based central core coated by continuous electrodeposition with at least one metal layer, including pretreatment of the surface of the core, characterized in that the following are subsequently performed successively on the core, PA1 a) an electrochemical deposition of copper in an aqueous bath maintained at a temperature of between 20.degree. C. and 60.degree.C., containing KCN, CuCN, K.sub.2 CO.sub.3 and KNaC.sub.4 H.sub.4 O.sub.6 with a current intensity of between 1 and 10 A/dm.sup.2 ; PA1 b) rinsing at ambient temperature; PA1 c) an electrochemical deposition of tin in an aqueous bath maintained at a temperature of between 20.degree. C. and 60.degree. C., containing essentially tin dissolved in methanesulphonic acid and, optionally, additives, with a current intensity of between 1 and 100 A/dm.sup.2 ; PA1 d) rinsing with water at 60.degree.C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.