Electrochemical studies of the composite polymer-containing coating on the 1579 aluminium alloy with welded joint

Abstract

The features of corrosion process on the surface of the 1579 Al alloy with welded joint area were investigated using SIET (scanning ion-selective electrode technique) and SVET (scanning vibrating electrode technique) in 3% NaCl. The development of corrosion was realized along the weld interface. Methods of composite polymer-containing layer generation based on plasma electrolytic oxidation (PEO) sufficiently improve the anticorrosion behavior of the Al alloy. Corrosion of Al alloy with protective layers are described in details. Composite coatings have the best anticorrosion properties and increase the stability of material in the corrosive medium.