Anti-corrosion mechanism of epoxy-resin and different content Fe2O3 coatings on magnesium alloy

doi:10.1007/s11706-016-0357-5

Frontiers of Materials Science

2016, Vol. 10

Issue (4): 367-374 https://doi.org/10.1007/s11706-016-0357-5

本期目录

Anti-corrosion mechanism of epoxy-resin and different content Fe₂O₃ coatings on magnesium alloy

Tao JIN¹,Fan-mei KONG²(

),Rui-qin BAI¹,Ru-liang ZHANG¹

¹. College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
². College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China

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Abstract：

In this study, anti-corrosion coatings were prepared and coated successfully on magnesium alloy substrates by mixing nanopowders, solvent, curing agent with epoxy resin. The effect of the amount of iron trioxide (Fe₂O₃) on the adhesion strength and corrosion resistance on magnesium alloy was investigated with standard protocols, and electrochemical measurements were also made in 3.5 wt.% NaCl solutions. The surface morphology and corrosion mechanism after corrosion tests was characterized using FESEM analysis. Nanoparticles in matrix acted as filler, and interstitial cross-linked spaces and other coating artifacts regions (micro cracks and voids) would all affect the anti-corrosion properties of coating. The results showed the proper powder content not only provided adhesion strength to these coatings but also improved obviously their anti-corrosion. Hydrogen bound to the amine nitrogen (¹N) could take part in the curing process rather than hydrogen of the amide site due to the smaller ΔG and the more stable configuration.

Key words： magnesium alloy corrosion iron trioxide anti-corrosion mechanism

收稿日期: 2016-06-29 出版日期: 2016-11-24

Corresponding Author(s): Fan-mei KONG

引用本文:

. [J]. Frontiers of Materials Science, 2016, 10(4): 367-374.
Tao JIN,Fan-mei KONG,Rui-qin BAI,Ru-liang ZHANG. Anti-corrosion mechanism of epoxy-resin and different content Fe₂O₃ coatings on magnesium alloy. Front. Mater. Sci., 2016, 10(4): 367-374.

链接本文:

https://academic.hep.com.cn/foms/CN/10.1007/s11706-016-0357-5
https://academic.hep.com.cn/foms/CN/Y2016/V10/I4/367

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