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AssigneesSumico Management Planning Company, Ltd., Akira Shibata
InventorAkira Shibata
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A silver-metal oxide composite material comprising a silver matrix, (a) from 1 to 20% by weight, in terms of elemental metal, of an oxide of at least one element selected from the group consisting of Sn, Cd, Zn and In and, optionally, (b) an oxide of Mg, Zr, etc. and/or (c) an oxide of Cd, Sb, etc.; the oxides being dispersed in the form of fine particles with a particle size of not more than about 0.1 .mu.m uniformly and being bound to the silver matrix with no space left, and a process for producing the same. The composite material is excellent in physical and chemical strengths at high temperatures. The process can produce the composite product even with thick walls, within a markedly short time in high productivity. The composite material is useful as electrical contact materials and electrode materials for electric welding.
A silver-metal oxide composite material comprising a silver matrix, from 1 to 20% by weight, in terms of elemental metal, of an oxide of (a) at least one element selected from the group consisting of Sn, Cd, Zn and In, the oxide of the (a) element being dispersed in the form of fine particles with a particle size of not more than about 0.1 .mu.m uniformly throughout the silver matrix from the surface to the core thereof and being bound to the silver matrix with no space left between the oxides and the silver matrix.
Dependencies are inferred from the claim text.