Silver-oxide electric contact material for use in switches for h

Details Silver-oxide electric contact material for use in switches for h Silver-oxide electric contact material for use in switches for h

1994-04-08

1995-09-19

Yee, Deborah

Metal treatment

Stock

Noble metal base

420501, 200266, 148430, C22C 506

Patent

active

054512727

ABSTRACT:
A silver-oxide material for electric contacts of high-current switches, having excellent deposition resistance and consumption resistance. The material is formed by subjecting to an internal oxidation treatment an Ag alloy consisting essentially, by weight %, of:
Sn: 5.1-8.5%;
In: 1.7-3.2%;
Te: 0.1-0.6%; and
Ag and inevitable impurities: the balance. If required, at least one of the following elements may be added:
Ni: 0.05-0.2%; and
Cd: 0.3-0.8%.

REFERENCES:
patent: 3933485 (1976-01-01), Shibata
patent: 4131458 (1978-12-01), Satoh et al.
patent: 4462841 (1984-07-01), Miyakawa et al.
patent: 5207842 (1993-05-01), Guerlet et al.
CA95(18): 160853V 1980.
Bohm et al, Influence of Small Alloying Additions on the Internal Oxidation and the Switching Behavior of AgSnIn-Alloys, 1980, pp. 905-914.
Electrical Contacts-1989, Proceedings of the 35th Meeting of the IEEE Holm Conference on Electrical Contacts, Sep. 20, 1989 Chicago, U.S., pp. 69-78, Lambert et al, "A New Doped Silver Tin Oxide Material with Improved Electrical Behaviour".

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