P. Leisner et al., CURRENT EFFICIENCY AND CRYSTALLIZATION MECHANISM IN PULSE PLATING OF HARD CHROMIUM, Journal of Applied Electrochemistry, 23(12), 1993, pp. 1232-1236
The current efficiency of chromium deposition was investigated under c
onditions of periodic current reversal. It has been demonstrated that
the relationship between the anodic and the cathodic charges, Q(a)/Q(c
), has a strong influence on the current efficiency and the structure
of the deposit. A plausible model for the crystallization mechanism du
ring periodic current reversal has been suggested. According to the mo
del, an advantageous chromium structure is maintained during the depos
ition process because interstitial hydrogen in the chromium lattice is
oxidized during the anodic period.