Journal of the Metal Finishing Society of Japan
Online ISSN : 1884-3395
Print ISSN : 0026-0614
ISSN-L : 0026-0614
Relationship between Composition of Electrodeposited Ni-Mo Alloys and Plating Factors
Kei HIGASHIHisaaki FUKUSHIMA
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1973 Volume 24 Issue 9 Pages 486-490

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Abstract
Nickel-Molybdenum alloys were obtained from a plating bath containing molybdic acid, nickel sulfate, potassium sodium tartrate, sodium chloride, and ammonia water (for adjusting pH of the solution). Plating variables studied were metal % of Mo in the bath, total metal ion concentration, potassium sodium tartrate concentration, pH of the bath, cathodic current density, and temperature. The following results were obtained: (1) Mo % in the deposits increased with the increases in metal % of Mo in the bath and total metal ion concentration and the rise of temperature. (2) Potassium sodium tartrate concentration had no effects on the alloy composition. (3) Mo % in the deposits decreased with the increases in pH value of the bath and cathodic current density. (4) Cathodic current efficiencies for the alloy deposition decreased with the increase in Mo % in the deposits, which showed an evident upper limit.
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