Microstructure and corrosion behavior of Mg-Nd coatings on AZ31 magnesium alloy produced by high-energy micro-arc alloying process

被引：20

作者：

Chen, Changjun ^{[1
]}

Wang, Maocai

Wang, Dongsheng

Jin, Ren

Liu, Yiming

机构：

[1] Chinese Acad Sci, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

[3] Shenyang Liming Aeroengine Corp, Shenyang 110043, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 438卷 / 1-2期

关键词：

magnesium alloy; Mg-Nd coatings; high-energy micro-arc alloying (HEMAA); corrosion;

D O I：

10.1016/j.jallcom.2006.08.057

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mg-Nd coatings were prepared by high-energy micro-arc alloying (HEMAA) on AZ31 magnesium alloy. The coatings were treated with Ar shielding gas in ambient atmosphere. X-ray diffraction (XRD) results showed that the phases formed of Mg-Nd coatings were similar to that of Mg-Nd electrode. The corrosion behavior of the coated AZ31 in 3.5 wt% NaCl solutions was studied by simple immersion test and potentiodynamic polarization measurement. It was found that the corrosion resistance of coated alloy was higher than that of AZ31 substrate. The corrosion potential of Mg-Nd coatings was much positive to that of AZ31 substrate. Furthermore, the corrosion resistance is bad due to the presence of defects when treated with undesired processing parameters. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：321 / 326

页数：6

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