Self-catalytic bath and method for the deposition of a nickel-ph

Details Self-catalytic bath and method for the deposition of a nickel-ph Self-catalytic bath and method for the deposition of a nickel-ph

1998-09-21

2000-11-07

Klemanski, Helene

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 127, C23C 1836

Patent

active

061430595

ABSTRACT:
Disclosed are a self-catalytic bath and a method for the deposition of Ni-P alloy on a substrate. The bath comprises nickel sulfate, sodium hypophosphite as a reducing agent, acetic acid as a buffer and traces of lead as a stabilizer. It also includes a citrate used as a complexing agent associated with a gluconate used both as a catalyst and a stabilizer. The disclosed bath makes it possible to tolerate large quantities of hypophosphite and is relatively long-lived. Furthermore, it can be used to prepare large quantities of Ni-P alloy per liter of solution.

REFERENCES:
patent: 4019910 (1977-04-01), Mallory, Jr.
patent: 4038085 (1977-07-01), Scannell
patent: 4152164 (1979-05-01), Gulla et al.
patent: 5221328 (1993-06-01), Bishop et al.
patent: 5614003 (1997-03-01), Mallory, Jr.
patent: 5718745 (1998-02-01), Itoh et al.

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