ELECTROLYTE FOR DEPOSITION OF COMPOSITE COATS BASED ON CHROME Russian patent published in 1998 - IPC

FIELD: electroplating. SUBSTANCE: invention refers to electrochemical deposition of composite coats based on chrome and can be used in various branches of mechanical engineering to produce wear resistant articles working under friction conditions with limited feed of lubricant. Electrolyte for deposition of composite coats based on chrome has chrome anhydride 200.0-250.0 g/l, sulfuric acid 2.0-2.5 g/l, addition of 0.1-0.5 g/l, particles of solid phase - disperse particle of boron nitride 8.0-20.0 g/l and calcium fluoride 40.0-60.0 g/l. Disperse particles of boron nitride and calcium fluoride are to be preferably used with mass ratio 1:(3-5). EFFECT: increased antifriction capabilities and ductility of chrome coats thanks to inclusion of particles of solid lubricant into composition of composite precipitates and diminished microhardness of chrome matrix. 1 cl, 1 tbl