Silver-coated stainless steel strip for movable contacts and method of producing the same
AssigneeFurukawa Electric Co., Ltd.
InventorsSatoshi Suzuki, Kuniteru Mihara, Naofumi Tokuhara
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Abstract
A silver-coated stainless steel strip for movable contacts, which has an underlying layer comprising any one of nickel, cobalt, nickel alloys, and cobalt alloys, on at least a part of the surface of a stainless steel substrate, and has a silver or silver alloy layer formed as an upper layer, in which a copper or copper alloy layer with a thickness of 0.05 to 2.0 μm is provided between the silver or silver alloy layer and the underlying layer; and a producing method of the above-described silver-coated stainless steel strip, in which said strip is subjected to a heat-treating in a non-oxidative atmosphere.
Claims3
A silver-coated stainless steel strip for movable contacts, which has an underlying layer comprising any one of nickel, cobalt, nickel alloys, and cobalt alloys, on at least a part of the surface of a stainless steel substrate, and has a silver or silver alloy layer formed as an upper layer,
- wherein a copper or copper alloy layer with a thickness of 0.05 to 2.0 μm is provided between the silver or silver alloy layer and the underlying layer.
A method of producing a silver-coated stainless steel strip for movable contacts, comprising the steps of:
- forming an underlying layer comprising any one of nickel, cobalt, nickel alloys, and cobalt alloys, on at least a part of the surface of a stainless steel substrate;
- forming an interlayer of a copper or copper alloy;
- coating with silver or a silver alloy;
- and
- heat-treating in a non-oxidative atmosphere.
Dependencies are inferred from the claim text.