The electrochemical deposition and corrosion stability of Zn-Mn alloy coatings

Abstract

The influence of the type of the deposition solution on the current efficiency during electrodeposition of Zn-Mn alloys was examined. The Zn-Mn alloys were deposited on steel from chloride, sulphate and pyrophosphate plating baths at different current densities. The influence of deposition current density on the appearance of alloy coatings, as well as their corrosion stability, was examined. It was shown that Zn-Mn alloys with the best corrosion properties, among all investigated in this work, were obtained from chloride plating bath at 2 A dm-2. .

Izučavan je uticaj vrste rastvora za taloženje na iskorišćenje struje prilikom elektrohemijskog taloženja Zn-Mn legura. Legure su taložene na čeliku iz hloridnog, sulfatnog i pirofosfatnog rastvora različitim gustinama struje. Ispitivan je uticaj gustine struje taloženja na izgled prevlaka legura, kao i njihovu korozionu stabilnost. Pokazano je da najveću korozionu stabilnost imaju legure dobijene taloženjem iz hloridnog rastvora gustinom struje od 2 A dm-2.