Method for producing electroless polyalloys

Details Method for producing electroless polyalloys Method for producing electroless polyalloys

1996-02-26

1997-03-25

Klemanski, Helene

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 123, 106 126, 106 127, C23C 1552

Patent

active

056140037

ABSTRACT:
Method for producing electroless nickel or cobalt polymetallic polyalloys having high hardness as plated and containing phosphorus, a primary metal selected from the group consisting of nickel and cobalt and at least one secondary metal selected from the group consisting of copper, molybdenum, tin, and tungsten, which alloys are prepared in baths employing a hypophosphite reducing agent and operated at a particular alkaline pH range and in the presence of a fluoborate anion. The polyalloys "as-deposited" do not require age or heat treatments to produce hardness having Vickers Harness Number values above about 800 (VHN.sub.100).

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patent: 3650803 (1972-03-01), Lin
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patent: 5213907 (1993-05-01), Caballero
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patent: 5338342 (1994-08-01), Mallory, Jr.
patent: 5494710 (1996-02-01), Mallory

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