Role of Phase Composition of PEO Coatings on AA2024 for In-Situ LDH Growth

被引：28

作者：

Serdechnova, Maria ^{[1
]}

Mohedano, Marta ^{[2
]}

Bouali, Anissa C. ^{[1
]}

Hoeche, Daniel ^{[1
]}

Kuznetsov, Boris ^{[3
]}

Karpushenkov, Sergey ^{[3
]}

Blawert, Carsten ^{[1
]}

Zheludkevich, Mikhail L. ^{[1
,4
]}

机构：

[1] Helmholtz Zentrum Geesthacht, Inst Mat Res, Max Planck Str 1, D-21502 Geesthacht, Germany

[2] Univ Complutense, Dept Ciencia Mat, Fac Ciencias Quim, E-28040 Madrid, Spain

[3] Belarusian State Univ, Fac Chem, Minsk 220030, BELARUS

[4] Univ Kiel, Fac Engn, Kaiserstr 2, D-24143 Kiel, Germany

来源：

COATINGS | 2017年 / 7卷 / 11期

关键词：

layered double hydroxides; plasma electrolytic oxidation; aluminum alloy; ELECTROLYTIC OXIDATION COATINGS; LAYERED DOUBLE HYDROXIDES; CORROSION PROTECTION; MG ALLOY; PLASMA;

D O I：

10.3390/coatings7110190

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Plasma electrolytic oxidation (PEO) is an environmentally friendly anodizing technique leading to the formation of a ceramic-like coatings under high-voltage discharges. Layered double hydroxides (LDHs) were grown directly on gamma, alpha, and amorphous Al2O3 powders, respectively, in order to investigate the phase responsible for in-situ LDH growth on PEO coating. Furthermore, it is shown that LDH growth is limited by the high tortuosity of the PEO layer and the accessibility of Al (OH)(4)(-) anions from the substrate covered with thin amorphous aluminum oxide, through the pores.

引用

页数：7

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