Electrodeposition of nickel-cobalt-molybdenum alloy

Abstract

Bright uniform crack-free deposits of ternary nickel-cobalt-molybdenum alloys containing 54-92% Ni, 7-44% Co, 0.6-4.7% Mo have been obtained from an acetate bath. From the experiments, optimum conditions are 0.2545 M nickel acetate, 0.0282 M cobalt acetate, 0.0010 M sodium molybdate, current density 2 A dm-2, pH 5, temperature 25 °C. The cobalt and molybdenum contents decreased with increase in current density, pH and temperature. X-ray studies showed the formation of an alloy with f.c.c. structure. © 1978.