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        Improving the corrosion resistance of MgZn1.2GdxZr0.18 (x =0, 0.8, 1.4, 2.0) alloys via Gd additions

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        Revised_manuscript_2_1_1_.pdf (PDF, 733Kb)
        Author
        Yin, Siqi
        Duan, Wenchao
        Liu, Wenhong
        Wu, Liang
        Bao, Jiaxin
        Yu, Jiamin
        Li, Liang
        Zhao, Zhong
        Cui, Jianzhong
        Zhang, Zhiqiang
        Attention
        2299/23081
        Abstract
        Effects of Gd addition on microstructure, corrosion behavior and mechanism of cast and extruded MgZn1.2GdxZr0.18 alloys are investigated through microstructure observation, weight loss and electrochemical tests. Increasing Gd from 0 to 2.0 at.%, grains are refined, MgZn2 phase, W-phase and X-phase are formed successively, and basal texture intensity is decreased. The significantly decreased grain size by extrusion and Gd addition induces formation of protective Gd2O3 and MgO layer. The extruded MgZn1.2Gd2.0Zr0.18 alloy shows decreased corrosion rate of 3.72 ± 0.36 mm/year, owing to fine and homogeneous microstructure, dual-role (micro-anode and barrier) of X-phase, compact oxidation layer and basal crystallographic texture.
        Publication date
        2020-12-01
        Published in
        Corrosion Science
        Published version
        https://doi.org/10.1016/j.corsci.2020.108962
        Other links
        http://hdl.handle.net/2299/23081
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