Effect of Nd Addition on Corrosion Resistance of AM60 Magnesium Alloy

doi:10.11902/1005.4537.2013.095

Journal of Chinese Society for Corrosion and protection

2014, Vol. 34

Issue (2): 185-191 DOI: 10.11902/1005.4537.2013.095

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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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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 words: trace Nd AM60 alloy corrosion mechanism corrosion rate electrode potential

Received: 15 September 2013

ZTFLH:

TG146.2

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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.

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https://www.jcscp.org/EN/10.11902/1005.4537.2013.095 OR https://www.jcscp.org/EN/Y2014/V34/I2/185

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