Controlling boron content of electroless nickel-boron deposits

Details Controlling boron content of electroless nickel-boron deposits Controlling boron content of electroless nickel-boron deposits

1982-12-13

1983-10-04

Smith, John D.

Coating processes

Immersion or partial immersion

Chemical compound reducing agent utilized

106 127, 106 122, 427438, C23C 302

Patent

active

044078692

ABSTRACT:
The boron content of an electroless nickel-boron deposit is enhanced by including a source of zirconyl ions or vanadyl ions within a borane-reduced bath for laying down the nickel-boron deposit, which bath has a moderate temperature and pH. The deposit laid down has a boron content of at least about 2 weight percent, based on the total weight of the deposit.

REFERENCES:
patent: 3062666 (1962-11-01), McLeod et al.
patent: 3310430 (1967-03-01), Schneble, Jr.
patent: 3946126 (1976-03-01), Feldstein
patent: 4019910 (1977-04-01), Mallory
patent: 4139660 (1979-02-01), Tur
patent: 4151311 (1979-04-01), Feldstein
patent: 4167416 (1979-09-01), Zolla
patent: 4259376 (1981-03-01), Feldstein
Mallory, "The Electroless Nickel-Boron Plating Bath; Effects of Variables on Deposit Properties" Plating, Apr. 1971, pp. 319-327.
"Zirconium Compounds", vol. 22, p. 643.

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