(Pleiades Publishing, Ltd., 2013) Danilov, Felix I.; Protsenko, Vyacheslav S.; Gordiienko, Viktor O.; Baskevich, Aleksandr S.; Artemchuk, Viktor V.
ENG: Regularities of the electroplating of chromium–carbon alloy coatings from a bath containing
basic chromium(III) sulfate, carbamide, formic acid, sodium sulfate, aluminum sulfate, orthoboric acid, and
sodium dodecyl sulfate are studied. Replacement of chromium sulfate as a source of trivalent chromium ions
in the solution with basic chromium sulfate (chrome tanning agent) results in a decrease in the current density
when metal deposition begins. As a result, the covering power of the bath increases. The effects discovered
are determined by changes in the composition of the discharged chromium complexes. A certain excess of
OH– groups in the inner sphere of electroactive chromium complexes results in acceleration of electroplat
ing. The studied electrolyte based on chrome tanning agent enables one to produce thick high quality nanoc
rystalline Cr–C alloy coatings with improved tribological characteristics.