Al和AlCr6Fe2等离子喷涂层在AZ91表面的EIS和腐蚀行为

Q3 Materials Science Koroze a ochrana materialu Pub Date : 2018-05-01 DOI:10.1515/kom-2018-0007

F. T. Kubatík, J. Stoulil, F. Lukáč, K. Stehlíková, P. Slepička

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引用次数: 0

摘要

本文介绍了在镁合金AZ91上用冶金结合法制备铝和AlCr6Fe2合金涂层。采用等离子喷涂系统WSP®-H500制备涂层。这种冶金结合（子层）是由金属间相Mg17Al12和镁和铝的固溶体组成的共晶结构形成的。在这项工作中，使用电化学阻抗谱（EIS）对这些层进行了研究。结果表明，在pH 9.1的硼酸盐缓冲液中，与未涂覆的AZ91相比，铝和AlCr6Fe2合金的等离子喷涂涂层的极化电阻（RcΓ）增加了数倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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EIS and corrosion behaviour of plasma sprayed layers of Al and AlCr6Fe2 on AZ91

Abstract This work presents the preparation of coatings of aluminium and AlCr6Fe2 alloy on magnesium alloy AZ91 with metallurgical bonding. Coatings were prepared by plasma spraying system WSP®-H 500. This metallurgical bond (sub-layer) is formed by an eutectic structure consisting of the intermetallic phase Mg17Al12 and the solid solution of magnesium and aluminium. In this work, the layers were studied using electrochemical impedance spectroscopy (EIS). It was shown that there is a several fold increase of the polarization resistance (Rcν) of plasma-sprayed coatings of aluminium and AlCr6Fe2 alloy, compared with uncoated AZ91 in borate buffer with pH 9.1.

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