Microstructure properties of pulse plated Ni-Co alloy

Ni-Co alloys were pulse plated in three different baths, namely sulfamate, Watts and chloride baths, in order to investigate the cross-section homogeneity and microstructure by means of GDOES and TEM. Furthermore, microhardness measurements were carried out to find the link between the mechanical properties and the cross-section characteristics of the alloy coatings. According to this work, the Ni-Co alloy layers deposited from sulfamate and Watts baths were homogeneous in the whole cross section and showed significantly lower microhardness than those of, grown from chloride containing bath.