The effect of time dependent native oxide surface conditions on the electrochemical corrosion resistance of Mg and Mg-Al-Ca alloys

被引：27

作者：

Felten, Markus ^{[1
]}

Nowak, Jakub ^{[1
]}

Beyss, Oliver ^{[1
]}

Gruenewald, Patrick ^{[2
]}

Motz, Christian ^{[2
]}

Zander, Daniela ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, Foundry Inst Aachen, Div Mat Sci & Engn, Corros & Corros Protect, Aachen, Germany

[2] Saarland Univ, Dept Mat Sci & Technol, Saarbrucken, Germany

来源：

CORROSION SCIENCE | 2023年 / 212卷

关键词：

Magnesium; Native oxide; SKPFM; XRR; XPS; Laves phase; ATMOSPHERIC CORROSION; MAGNESIUM ALLOYS; IN-SITU; RESISTIVITY DISTRIBUTIONS; MECHANICAL-PROPERTIES; INITIAL OXIDATION; PURE MAGNESIUM; FILM GROWTH; WATER-VAPOR; XPS;

D O I：

10.1016/j.corsci.2022.110925

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The time dependent native oxide surface conditions of Mg and Mg-Al-Ca alloys under moderate atmospheric conditions were continuously analysed via in situ SKPFM, in situ XRR and ex situ XPS measurements. The progressive hydration of the MgO layer appears to be the dominant surface reaction for all investigated alloys during the investigated time period up to 24 h. Subsequent electrochemical measurements revealed a reduced corrosion resistance of all Mg alloys under short-term immersion conditions with a higher hydration degree of the native oxide.

引用

页数：16

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