Deposition Modes of Cobalt from Sulfate-Chloride Solutions

The as‐plated surfaces of cobalt electrodeposits obtained using various combinations of the common plating variables as well as some thinned foils of these samples were studied. The basal plane was found to be predominantly perpendicular to the substrate leading to and fiber axes. Structural features associated with each fiber axis are explained in terms of crystal symmetry and twinning. Using the concepts of free and inhibited outgrowth it was not possible to predict the structure resulting from plating under a given set of variables. The cubic phase of cobalt was observed after deposition at room temperature and low p H.