New electroplating method of nickel in emulsion of supercritical carbon dioxide and electroplating solution to enhance uniformity and hardness of plated film

High quality nickel films having fine grains have been developed using a new electroplating method involving the emulsion of a supercritical carbon dioxide, an electroplating solution and a surfactant. The plated films using this method have a uniformity of the surface and Vickers hardness, which is better than the results obtained by using conventional electroplating methods.