METHOD OF APPLYING COMPOSITE CHROMIUM COATINGS Russian patent published in 2016 - IPC C25D15/00 

FIELD: chemistry.

SUBSTANCE: method includes the electrochemical deposition of a coating from a chromic acid-based electrolyte, wherein the electrolyte used contains chromium trioxide CrO₃ - 250 g/l, calcium sulphate CaSO₄ - 20 g/l and dispersed graphite - 10-20 g/l, obtained from carbonaceous solid wastes from aluminium production in the form of coal froth floatation tailings.

EFFECT: high electroconductivity and corrosion resistance of the obtained coating due to the use of carbon particles obtained from aluminium production wastes with a particle size of less than 200 nm.

2 dwg, 1 tbl