A MECHANISTIC CONSIDERATION ON THE ELECTRODEPOSITION OF NI-MO ALLOYS

The hydrogen overpotential and the number of d-band vacancy of Ni-Mo c ast alloys were studied in connection with the current efficiency and maximum molybdenum content in the electrodeposition of Ni-Mo alloys. T he hydrogen overpotential of the cast alloys of alpha phase decreased with increasing molybdenum content. The number of d-band vacancy also decreased with increasing molybdenum content and reached nearly zero a t 6 at% Mo. From numbers of d-band vacancy and electrochemical propert ies of Ni-Mo cast alloys with various molybdenum content, the mechanis m for the electrodeposition of Ni-Mo alloy was discussed.