METHOD FOR ZINC ELECTRODEPOSITION Russian patent published in 2003 - IPC

FIELD: electroplating, zinc electrochemical deposition, applicable in mechanical engineering, instrument engineering, electronic industry for coating of various parts. SUBSTANCE: the method consists in electrodeposition of zinc from intermixed aqueous electrolyte with a pH-value, within 3.5 to 4.5, containing zinc sulfate, aluminum sulfate and sodium sulfate, according to the invention, allyl alcohol is additionally introduced in the electrolyte at the following relation of the components: zinc sulfate, g/l - 200-250; aluminum sulfate, g/l - 25-30; sodium sulfate, g/l - 50- 100; allyl alcohol, m/l - 5-15; the process is accomplished at a temperature of 18 to 25 C and cathode current density of 1 to 7 A/sq.dm. EFFECT: produced qualitative brilliant zinc plating without preliminary purification. 1 tbl