Method for preparation of a Zn-Ni electroplating or hot-dip galv

Details Method for preparation of a Zn-Ni electroplating or hot-dip galv Method for preparation of a Zn-Ni electroplating or hot-dip galv

1992-09-15

1994-08-09

Niebling, John

Coating processes

Immersion or partial immersion

Molten metal or fused salt bath

427431, B05D 118

Patent

active

053363922

ABSTRACT:
A Zn-Ni alloy having a high Ni content is used for supplying Ni.sup.2+ and Zn.sup.2+ ions into an acidic plating bath and for supplying Ni and Zn into a hot dip galvanizing bath. This alloy is characterized by being produced by using a flux consisting of a fused-salt former, which forms a salt having a melting temperature of 700.degree. C. or less, and Na.sub.2 B.sub.4 O.sub.7 and occasionaly additionally Na.sub.2 CO.sub.3. By using the inventive alloy, the bath can be quickly prepared, and Zn and Ni can be supplied to the bath without leaving the undissolved residue.

REFERENCES:
patent: 4569731 (1986-02-01), Matsuda et al.
patent: 4873153 (1989-10-01), Miller
patent: 4915906 (1990-04-01), Champagne et al.
patent: 4923573 (1990-05-01), Florian

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