钇对AZ91在NaCl溶液中腐蚀的影响

Effect of Rare Earth on Corrosion of AZ91 Magnesium Alloy in NaCl Solution

  • 摘要: 通过静态失重法、极化曲线测试研究了钇(Y)对AZ91镁合金腐蚀行为的影响。结果表明加入钇(Y)可在基体内形成块状的YAl2化合物,并使AZ91微观组织得到改善,减缓了在NaCl溶液中的腐蚀。

     

    Abstract: The effect of yttrium on corrosion behavior of AZ91 magnesium alloy was studied in 3.5%NaCl solution by means of weight loss and polarization curves.The result show that there is polyhedral compound in AZ91 alloy which is identified as YAl2 by EDX analysis and yttrium can refine microstructure of AZ91 magnesium alloy and reduce corrosion rate of the alloy.

     

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