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

作　　者：赵艳娜[1] 朱元良[1] 齐公台[2] 

机构地区：[1]南阳理工学院,河南南阳473004 [2]华中科技大学化学系,湖北武汉430074

出　　处：《材料开发与应用》2005年第5期12-13,25,共3页Development and Application of Materials

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。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.

关 键 词：镁合金 钇 腐蚀 微观结构 

分 类 号：TG146.22[一般工业技术—材料科学与工程]