Aims: Ni-Mo alloy coatings could represent a key material for several leading applications
of engineering. Indeed these coatings present excellent physico-chemical characteristics such as
magnetism, wear-resistance, heat-conductivity, and electrocatalytic properties.
Observations: Ni-Mo alloys have been electrowon, with a pH 5.8 sulphate catholyte containing 40 g/l
Ni and Mo in the range 1-4 g/l, sodium citrate and acetic acid, at temperature in the range 25-50°C and
current density in the range 10-100 mA/cm2.
Methods: A cell having cathodic and anodic compartment separated by a polypropylene membrane
has been used.
Result: The effect of molybdenum ion concentration in the electrolyte, temperature and
current density on coating morphology and the Ni-Mo deposit adherence on steel substrate as
well as Mo content of the produced binary alloys have been investigated.