Y含量对Mg-6Zn-1Gd合金显微组织和腐蚀速率的影响  

Effect of Y content on microstructure and corrosion rate of Mg-6Zn-1Gd alloy

作　　者：张林庆 薛惠莉 ZHANG Linqing;XUE Huili(Shanxi Yinguang Huasheng Magnesium Industry Co.,Ltd.,Yuncheng 043800,Shanxi China)

机构地区：[1]山西银光华盛镁业股份有限公司,山西闻喜043800

出　　处：《中国铸造装备与技术》2025年第2期70-75,共6页China Foundry Machinery & Technology

摘　　要：本研究通过调整Y含量,制备了不同Y含量的Mg-6Zn-1Gd合金,并采用OM、SEM显微组织观察。使用电化学测试,包括极化曲线和阻抗谱评估合金的电化学性能。研究结果表明,随着Y含量的增加,合金的腐蚀速率增加,主要是由于Y元素的添加改善了合金的晶粒与第二相分布,但同时也增加了腐蚀敏感区域,导致腐蚀速率提高。此外,Y元素可能增加了合金的电化学活性,使其更容易参与腐蚀反应。In this study,Mg-6Zn-1Gd alloys with different Y contents were prepared by adjusting the Y content,and the microstructure was observed by OM and SEM.Electrochemical testing is used to evaluate the electrochemical properties of alloys,including polarization curves and impedance spectroscopy.The results show that with the increase of Y content,the corrosion rate of the alloy increases,mainly due to the addition of Y element to improve the grain distribution and the second phase of the alloy,but also increases the corrosion-sensitive area,resulting in an increase in the corrosion rate.In addition,the Y element may increase the electrochemical activity of the alloy,making it more likely to participate in corrosion reactions.

关 键 词：Mg-6Zn-1Gd合金 钇含量 显微组织 腐蚀速率 电化学性能 

分 类 号：TG146.22[一般工业技术—材料科学与工程]