There are several types of baths based on nickel chloride, nickel sulfate and nickel sulphamate  for Ni electroplating. Among these, the advantages of Ni electrodeposition from Ni sulphamate based solutions are low internal stress and high current efficiency (>90%). The functionalities of coatings are affected by internal stress which is a common problem of the electroplating process. The parameters of electrodeposition and additive particles which are insoluble in the bath, in the case of composite coatings , change the characteristics of the plating and affect the internal stress of the coatings. The influence of the electrodeposition parameters and their interaction effects on the internal stress of Ni deposits were studied by fractional factorial design. Self-interactions and cross correlations of temperature, pH, current density and bath composition on internal stress were determined by statistical analysis of results obtained from sulphamate baths. It was found that increasing temperature and deposit thickness and decreasing boric acid and chloride ion concentrations resulted in decreasing the internal stress within the parameter ranges covered in this study.
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