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中国腐蚀与防护学报  2014, Vol. 34 Issue (2): 185-191    DOI: 10.11902/1005.4537.2013.095
  研究报告 本期目录 | 过刊浏览 |
稀土Nd含量对AM60镁合金耐蚀性能的影响
周京1, 冯芝勇1, 张金玲1,2, 王社斌1,2
1. 太原理工大学材料科学与工程学院 太原 030024;
2. 太原理工大学 教育部新材料界面与工程重点实验室 太原 030024
Effect of Nd Addition on Corrosion Resistance of AM60 Magnesium Alloy
ZHOU Jing1, FENG Zhiyong1, ZHANG Jinling1, 2, WANG Shebin1, 2
1. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
2. Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024,China
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摘要: 

AM60合金中加入稀土Nd可使晶粒细化,具有强化晶界和相界的作用,主要是通过提高基体电极电位来改善镁合金的耐腐蚀性能,加入Nd可阻隔活化Mg与H+的接触面积,同时抑制了Mg17Al12 相对α相腐蚀的促进作用,加强了新相Al11Nd3和Mg17Al12相对镁合金腐蚀的阻碍作用,从而提高镁合金的耐腐蚀性能。

关键词 微量NdAM60合金腐蚀机理腐蚀速率电极电位    
Abstract:The corrosion behavior of AM60 alloy with different Nd content (0%~1.2%, mass fraction) in 3.5%NaCl solution was studied by means of immersion test and potention dynamic polarization measurement, as well as scanning electronic microscopy (SEM), energy-dispersive spectroscopy (EDS) and X-ray diffractometry (XRD). The results show that the addition of rare earth Nd in AM60 alloy can refine grains and strengthen grain and phase boundaries of the alloy. The addition of rare earth Nd may play rolls in shifting positively the corrosion potential of the alloy, decreasing the contact area between the activated Mg and H+, and slowing down the effect of Mg17Al12 on the corrosion of α phase in the alloy. Therefore, the corrosion resistance of AM60 alloy is enhanced by the addition of Nb effectively.
Key wordstrace Nd    AM60 alloy    corrosion mechanism    corrosion rate    electrode potential
收稿日期: 2013-09-15     
ZTFLH:  TG146.2  
基金资助:国家自然科学基金项目(50901048),太原理工大学2012年校专项青年基金项目 (2012L055)和北京科技大学国家重点实验室开放基金项目 (KF13-06) 资助
通讯作者: shebinwang@163.com   
作者简介: 周京,女,1987年生,硕士生,研究方向为镁合金耐蚀性能

引用本文:

周京, 冯芝勇, 张金玲, 王社斌. 稀土Nd含量对AM60镁合金耐蚀性能的影响[J]. 中国腐蚀与防护学报, 2014, 34(2): 185-191.
ZHOU Jing, FENG Zhiyong, ZHANG Jinling, WANG Shebin. Effect of Nd Addition on Corrosion Resistance of AM60 Magnesium Alloy. Journal of Chinese Society for Corrosion and protection, 2014, 34(2): 185-191.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2013.095      或      https://www.jcscp.org/CN/Y2014/V34/I2/185

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