| 摘要 |
The present invention relates to new electrical contacts characterised in that the active surface of the said contacts consists of a base made from aluminium, of a layer of chromium adhering to the aluminium and having a thickness lying between 5 and 30 micrometres, the said layer having been electronically deposited, of a layer of nickel adhering to the layer of chromium and having a thickness lying between 5 and 25 micrometres and electrolytically deposited, and of a superficial layer of a thickness lying between 5 and 15 micrometres covering the said layer of nickel and consisting of a material chosen from copper, silver, gold and other materials known to be good conductors.
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