Properties of ZnO/ZnAl2O4 composite PEO coatings on zinc alloy Z1

被引：7

作者：

Serdechnova, M. ^{[1
]}

Blawert, C. ^{[1
]}

Karpushenkov, S. ^{[2
]}

Karpushenkava, L. ^{[2
]}

Shulha, T. ^{[1
]}

Karlova, P. ^{[1
]}

Vasilic, R. ^{[3
]}

Stojadinovic, S. ^{[3
]}

Stojanovic, S. ^{[4
]}

Damjanovic-Vasilic, Lj ^{[4
]}

Heitmann, V ^{[1
]}

Rabchynski, S. M. ^{[2
]}

Zheludkevich, M. L. ^{[1
,5
]}

机构：

[1] Helmholtz Zentrum Geesthacht, Inst Surface Sci, Max Planck-Str 1, D-21502 Geesthacht, Germany

[2] Belarusian State Univ, Fac Chem, Nezavisimosti Ave 4, Minsk, BELARUS

[3] Univ Belgrade, Fac Phys, Studentski Trg 12-16, Belgrade 11000, Serbia

[4] Univ Belgrade, Fac Phys Chem, Studentski Trg 12-16, Belgrade 11000, Serbia

[5] Univ Kiel, Fac Engn, Inst Mat Sci, Kaiserstr 2, D-24143 Kiel, Germany

来源：

SURFACE & COATINGS TECHNOLOGY | 2021年 / 410卷

关键词：

Zinc alloy; Plasma electrolytic oxidation; Phosphate-aluminate electrolyte; Wear protection; Corrosion behaviour; Photocatalytic properties; PLASMA ELECTROLYTIC OXIDATION; SLIDING WEAR BEHAVIOR; MAGNESIUM ALLOY; CORROSION-RESISTANCE; ZNAL2O4; NANOPARTICLES; OPTICAL-PROPERTIES; ZNO NANOPARTICLES; MG ALLOY; ALUMINUM; PERFORMANCE;

D O I：

10.1016/j.surfcoat.2021.126948

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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.

引用

页数：17

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