Electrocrystallization of cadmium on copper single crystal planes under the influence of an asymmetric alternating current

Abstract Cadmium grows with a {0001} preferred orientation when electrodeposited on copper single crystals with pure dc. Superimposed alternating current in suitable ratios with dc perfects the {0001} orientation in cadmium deposits. The snowflake dendritic growth produced in cadmium deposits under the influence of superimposed ac of a higher magnitude appears to initiate at the corners of hexagonal platelets. This is probably due to the re-entrancies created by rotation induced twinning of the hexagonal platelets.