| 摘要 |
An electrical multilayer contact, specifically for relays, comprises the following layers disposed upon each other on a contact support member: a first layer of a copper-nickel alloy for mechanically and electrically connecting the further layers to the support member, a second layer consisting of silver or having a very high silver content for adhering the further layers to the first layer, a third layer of a silver-tin oxide composition, a fourth layer of silver or a silver alloy, and a fifth layer of gold or an alloy having a high gold content. This multilayer structure is preferably used for both, the fixed contact member and the movable contact member of a relay contact couple. In this case, the upper surface of the multilayer contact structure disposed on the fixed contact is plane, while that on the movable contact is curved in one direction to cooperate with the opposite plane surface in forming a line contact. |
