저널

To investigate how to produce the crack free and chromium deposits, bath compositions, additives, electrolysis conditions and other electroplating parameters, such as cathodic current efficiency, surface hard-ness, crack density and corrosion rate of deposits were examined carefully. The crack free chrome deposits were well obtained using both wetting agents and two kind of additives. At 60 A/d$m^2$, $60^{circ}C$ electrolysis condition, crack free bright hard chromium deposits were well obtained to a thickness $300mu extrm{m}$ in Additive-I and Additive-II added solution.