Anodic Behavior of Nickel Anode in Nickel Sulfamate Plating Solution and Its Effect on Properties of Deposits

The anodic behavior of electrolytic nickel anode in nickel sulfamate plating Solution was investigated,using anodic polarization curves ,metallographic observation of cross-sections of nickel deposits,Hull Cell tests with solutions with and without Cl-,F-,bending tests with five solutions of different compositions,and sulfur content analysis in nickel deposit with mass spectrometry.Anodic behavior was significantly affected by bath composition,especialy Cl- and F-.The deposits prepared from the solution without Cl- and F- showed better ducitility and laminated structure than those with Cl- and F-.But after heat treatment,laminated structure no longer existed and ductility decreased.