Abstract
The present study has been made to investigate the electrodeposition of chromium from CrCl3⋅6H2O-HCONH2, CrCl3⋅6H2O-HCON (CH3)2, and CrCl3⋅6H2O-(CH3)2SO solutions with additives. The solubility of CrCl3⋅6H2O in the organic solvents and the specific conductance of the solutions were measured, and these values were found to be generally lower than those in aqueous systems. The optimum conditions of the electrolysis in organic solvents were determined. Thin, bright and smooth deposits were obtained from the above conditions with a low cathode current efficiency (less than 30%). Chromium deposition mechanism is discussed in terms of the formation of chromium (III) complex ions in FA, DMF and DMSO solvents.
