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US 4,904,317 AGranted
Erosion resistant Ag-SnO.sub.2 electrical contact material
AssigneeTechnitrol, Inc.
InventorsShinhoo Kang, Charles Brecher, Philip C. Wingert
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Abstract
An erosion resistant electrical contact material and a method of making the material is described. The material comprises from about 10 to about 20 volume percent of SnO.sub.2, from about 0.45 to about 1.2 volume percent of an oxide selected from the group consisting of TiO.sub.2, CeO.sub.2, ZrO.sub.2, HfO.sub.2, and combinations thereof and the balance being substantially silver.
Claims6
An electrical contact material consisting essentially of from about 10 to about 20 volume percent SnO.sub.2 ;
- from about 0.4 to about 4.0 volume percent of a dopant oxide selection from the group consisting of TiO.sub.2, CeO.sub.2, ZrO.sub.2, HfO.sub.2, and combinations thereof;
- and the balance being substantially silver.
Dependencies are inferred from the claim text.