The effect of saccharin on the electrochemical behavior of the Watts plating bath for electrodeposition of Ni coating on highly pure Cu strips was investigated by potentiodynamic scan method and alternating current impedance method,and the action of saccharin in refining Ni coating was examined.Results indicate that introducing saccharin in Watts plating bath contributes to enhance the cathodic polarization,increase the electrochemical reaction resistance,and favors better refinement of the grains of Ni coating.
