Corrosion Mechanism and Corrosion Model of Mg-Y Alloy in NaCl Solution

作     者：徐宏 WU Zhiquan WANG Xiaoru 张新 REN Jiping SHI Yang WANG Zepu WANG Liwei LIU Changhua 

作者机构：School of Materials Science and Engineering North University of China Taiyuan 030051 China Institute of Thermal Power Generation Technology China Datang Coporation Science and Technology Research Institute Beijing 102206 China Century College Beijing University of Posts and Telecommunications Beijing 102101 China State Key Lab for Fabrication & Processing of Non-ferrous Metals Beijing General Research Institute for Non-ferrous Metals Beijing 100088 China Shenyang Area Military Representative Office of Armored Military Representative Office Chinese PLA General Armament Department Shenyang 110016 China Center of Science and Technology Beijing North Vehicle Group Corporation Beijing 100072 China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2016年第31卷第5期

页      面：1048-1062页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Funded by the National Key Technology R&D Program of China(Nos.2011BAE22B01 and 2011BAE22B06) 

主　　题：Mg Y corrosion electrochemical weight loss rate 

摘      要：Corrosion of Mg–Y alloy was studied using electrochemical evaluations, immersion tests and SEM observations. Corrosion mechanisms of Mg-（0.25 and 2.5） Y alloy and Mg-（5, 8, and 15） Y alloy were uniform corrosion and pitting corrosion respectively, and the content of Mg_（24）Y_5 phases determined its effect acting as cathode to accelerate the corrosion or corrosion barrier to inhibit the corrosion. Corrosion resistance of Mg-（0.25, 2.5, 5, 8, and 15） Y alloys was as follows： Rt（Mg-0.25Y） 〈 Rt（Mg-8Y） 〈 Rt（Mg-15Y） 〈 Rt（Mg-5Y） 〈 Rt（Mg-2.5Y）. Y could significantly improve the corrosion resistance of the Mg-Y alloy, but the excess of Y deteriorated the corrosion resistance of the Mg-Y alloy. The optimum content of Y in the studied alloys was 2.5%.