Popov, B. N., R. E. White, D. Slavkov, and Z. Koneska. 1992. “Reduction of Chromium (VI) when Solar Selective Black Chromium is Deposited in the Presence of Organic Additive”. Journal of The Electrochemical Society 139 (1): 91-98.
Abstract
Electrochemical dc methods were used to study the reduction of chromium (VI) in the presence of organic additives. It is shown that F - , thiourea, and citric acid are essential to enable deposition of black chrome from concentrated chromic acid solutions. A new formulation of the plating bath is defined. The optimum operating conditions under which spectrally selective surface of black chrome is deposited have been determined.
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