Modeling the Electroplating of Hexavalent ChromiumN. Obaid, R. Sivakumaran, J. Lui, A. Okunade
University of Waterloo, Waterloo, ON, Canada
This project modeled an industrial chromium plating process for automotive components. The process was modeled via the COMSOL Multiphysics® Electrodeposition Module. The simulation examined the effect of solution conductivity, electrode spacing, and anode height utilizing a factorial design approach. A sensitivity analysis was used to study the effect of these variables on the thickness value at the midpoint, as well as the non-uniformity of the plated surface. The results concluded that the variables selected for this study had a substantial impact on the overall thickness value as well as the non-uniformity. The most to least significant variables were solution conductivity, anode-cathode spacing, and anode height, respectively. The model and factorial design were used to generate a numerical relationship between the variables.