ELECTROLYTE FOR ELECTROCHEMICAL DEPOSITION OF MULTIFUNCTIONAL COATS BASED ON NICKEL Russian patent published in 2000 - IPC

FIELD: electrochemical deposition of metal coats, specifically, nickel coats. SUBSTANCE: invention can find use for deposition of hard corrosion-, heat- and wear-resistant coats in radio electronic and automotive industries. Given electrolyte carries, g/l: nickel sulfite heptahydrate 300.0-400.0; nickel chloride hexahydrate 20.0-40.0; saccharin 0.5-1.0; malonic acid 25.0-30.0; sodium chloride 3.5-4.5; formaldehyde 0.5-1.2; paratoluenesulfamide 1.0- 1.5; moistening agent C-102 0.01-0.05; sodium decahydroborate 0.01-0.5. High stability of electrolyte, possibility of analysis of its composition and timely correction in process of deposition of coat make it feasible to deposit comparatively great thickness of coats ( up to 0.5 mm ) in same electrolyte with preservation of specified properties. Coat has practically no pores, adheres well to basic surface and has mirror surface. Owing to versatile properties given electrolyte has wide range of application and can be used both for deposition of hard and strong coats and for deposition of protective and decorative coats on steel, pig iron, copper, titanium and other metals. EFFECT: proposed electrolyte displays high stability and possibility of analysis and timely correction of its composition in process of deposition of coats.