Please use this identifier to cite or link to this item: https://physrep.ff.bg.ac.rs/handle/123456789/1029
Title: Properties of ZnO/ZnAl<inf>2</inf>O<inf>4</inf> composite PEO coatings on zinc alloy Z1
Authors: Serdechnova, M.
Blawert, C.
Karpushenkov, S.
Karpushenkava, L.
Shulha, T.
Karlova, P.
Vasilić, Rastko 
Stojadinović, Stevan 
Stojanović, Vladimir
Damjanović-Vasilić, Lj
Heitmann, V.
Rabchynski, S. M.
Zheludkevich, M. L.
Keywords: Corrosion behaviour;Phosphate-aluminate electrolyte;Photocatalytic properties;Plasma electrolytic oxidation;Wear protection;Zinc alloy
Issue Date: 25-Mar-2021
Journal: Surface and Coatings Technology
Abstract: 
Recently the successful formation of PEO coatings on zinc alloy in a phosphate aluminate electrolyte was shown. The produced composite coatings contain various mixtures of ZnO and ZnAl2O4. In frame of the current study, the properties of the formed coatings including adhesion/cohesion, wear, corrosion and photocatalytic activity were analysed to identify possible applications. However, the coatings show internal porosity and a sponge-like structure. Thus the cohesion within the coating is quite low. Pull-off tests have demonstrated clear rupture within the PEO layer at strength values as low as 1 MPa. The photocatalytic activity is limited, in spite of the formation of a higher amount of ZnO at shorter treatment times. Interestingly, the composite coatings of ZnO and higher amounts of ZnAl2O4 spinel showed a higher activity, but not sufficient for fast and effective catalytic cleaning applications.
URI: https://physrep.ff.bg.ac.rs/handle/123456789/1029
ISSN: 0257-8972
DOI: 10.1016/j.surfcoat.2021.126948
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