抄録
Ag–2–10 at%Zn alloys containing small amounts of several additional elements such as 1 at% Sn, 1 at%In, 0.5 at%Te, 0.5–3 at%Cu and 0.5 at%Li were internally oxidized in air, and in oxygen of 0.1 and 0.5 MPa at 1073 and 1123 K. The characteristics of electrical contact, such as welding adhesion, erosion and contact resistance of the alloys were investigated.
(1) Internally oxidized Ag–8–10Zn–0.5Te, Ag–6Zn–1Sn–0.5Te and Ag–4–6Zn–1Sn–1In–0.5Te alloys are superior as electrical contacts. (2) The welding adhesion is affected by both the oxide content and the dispersed structure. On the other hand, the erosion is affected by the oxide content, but not by the dispersed structure. (3) The contact resistance increases with increasing oxide content, as well as with the addition of Sn and In.
