Stratified corrosion-resistant complex

Details Stratified corrosion-resistant complex Stratified corrosion-resistant complex

1983-02-23

1984-03-27

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428672, 428673, 428680, 368280, C22C 1905, B32B 1504

Patent

active

044394993

ABSTRACT:
The present invention relates to a stratified, corrosion-resistant complex comprising a metal substrate and an outer layer made of a noble material. According to the invention the substrate is composed of an alloy having, by weight at least 45% nickel, at least 7% chromium, and at least 7% molybdenum, all the other components of the substrate representing at most 15% of the alloy.
The invention is particularly useful for making the backs of watch cases.

REFERENCES:
patent: 3585009 (1971-06-01), Harigaya
patent: 3627561 (1971-12-01), Richards
patent: 4080201 (1978-03-01), Hodge et al.
patent: 4155782 (1979-05-01), Shimotori
"Alloy for Watch and Instrument Parts", Straumann, Chemical Abstracts, vol. 53, Oct. 31, 1958, Article 16910g.
"Material Engineering File Facts", Meierdirks, Materials and Methods, Sep. 1953, p. 139.
"Nickel-Tantalum Alloys", Kotrol, Chemical Abstracts, vol. 74, Dec. 1970, 56757x.

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