Effects of Calcium on Corrosion Resistance of ZA104 Magnesium Alloy

Bai Zhiling

doi:10.15980/j.tzzz.2019.07.023

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Effects of Calcium on Corrosion Resistance of ZA104 Magnesium Alloy
Vol. 39, Issue 7, Pages: 788-790(2019)
Published： 2019 ，
DOI： 10.15980/j.tzzz.2019.07.023

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[1]白志玲.Ca对ZA104镁合金耐腐蚀性能的影响[J].特种铸造及有色合金,2019,39(07):788-790.

Bai Zhiling. Effects of Calcium on Corrosion Resistance of ZA104 Magnesium Alloy. [J]. Special Casting & Nonferrous Alloys 39(7):788-790(2019)
[1]白志玲.Ca对ZA104镁合金耐腐蚀性能的影响[J].特种铸造及有色合金,2019,39(07):788-790. DOI： 10.15980/j.tzzz.2019.07.023.

Bai Zhiling. Effects of Calcium on Corrosion Resistance of ZA104 Magnesium Alloy. [J]. Special Casting & Nonferrous Alloys 39(7):788-790(2019) DOI： 10.15980/j.tzzz.2019.07.023.

摘要

采用金相显微镜、静态失重腐蚀试验和电化学工作站

研究了不同Ca含量对ZA104合金在3.5%的NaCl溶液中耐腐蚀性的影响。结果表明

随着Ca含量增加

ZA104镁合金在NaCl溶液中的静态失重腐蚀速率先减小后增加;添加Ca后

ZA104合金的自腐蚀电位均增大

当Ca含量为0.3%时

合金的极化曲线表明其自腐蚀电流密度值最低

耐蚀性最好。Ca的添加有利于细化合金组织

提高合金的耐腐蚀性能。

Abstract

The effects of different calcium content on corrosion resistance of ZA104 alloy in 3.5% NaCl solution were investigated by metallographic microscope

static weight loss corrosion test and electrochemical method.The results reveal that the static weight loss corrosion rate of ZA104 magnesium alloy in NaCl solution is decreased and then increased with the increase of calcium content.The self-corrosion potential of ZA104 alloy is increased with the addition of calcium.With 0.3% Ca addition

the polarization curve of the alloy shows that the self-corrosion current density is the lowest

and the corrosion resistance of ZA104+0.3 Ca alloy presents desirable.In addition

the addition of calcium is beneficial to refine the structure and improve the corrosion resistance of the alloy.