Optimizing the corrosion performance of rust layers: role of Al and Mn in lightweight weathering steel

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作者：
Yihao Tang
Yuxing Guo
Pengfei Ji
Bo Li
Chaoqun Xia
Shuzhi Zhang
Junsong Zhang
Xinyu Zhang
Riping Liu
机构：
[1] Yanshan University,State Key Laboratory of Metastable Materials Science and Technology
[2] Shandong Laboratory of Yantai Advanced Materials and Green Manufacture,Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, School of Materials Science and Engineering
[3] Hebei University of Technology,undefined
来源：
npj Materials Degradation | / 8卷
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摘要：
In this study, the corrosion behavior of AlMn lightweight weathering steel (LWS) in the simulated marine atmosphere was investigated by means of the dry/wet corrosion cycle test. The results showed that Al was present as FeAl2O4 and enriched in the inner layer, which significantly optimizes the rust layer in terms of compactness, elemental distribution, phase constitution, and electrochemical properties. The Mn oxides promoted the formation of FeAl2O4 and enhanced the anti–rupture ability of the LWS’s rust layer.
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