Title: Electrical contact material

Abstract: An alloy for composite electrical contact materials which is composed of 5 to 10 weight percent of tin and 1.0 to 6 weight percent of indium, the balance being silver, said alloy being subjected to an internal oxidation. The alloy may contain, when added by one or more other solute metal elements selected from zinc, antimony, lead and bismuth, as much as 6 to 15 weight percent of tin and said other solute metal elements in total in which the latter are less than 30 percent of the former. The alloy may also comprise up to 0.5 weight percent of ferrous or alkali earth metals.

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Inventors: Shibata, Akira (Yokohama, JA)

Application Number: 474173
Filing Date: 1974-05-29
Publication_date: 1976-01-20
Assignee: Chugai Denki Kogyo Kabushiki-Kaisha (Tokyo, JA)
Primary Class(es): 148/431
Other Classes:
US Patent Ref:

2486341	Oct, 1949	Stumbock	75/173.
2572662	Oct, 1951	Richardson et al.	75/173.
2796346	Jun, 1957	Stumbock	75/173.
3472654	Oct, 1969	Comey et al.	75/173.
3607244	Sep, 1971	Kabayama	75/173.
3694197	Sep, 1972	Zdanuk et al.	75/173.

Other Refs: 611,8131,153,1782,011,0022,012,910

Nov, 1948	UK
Aug, 1963	DT
Sep, 1971	DT
Oct, 1970	DT

Primary Examiner: Rutledge, L. Dewayne
Assistant Examiner: Weise, E. L.
Attorney: Shlesinger, Fitzsimmons & Shlesinger