Effects of solidification cooling rate on the corrosion resistance of Mg–Zn–Ca alloy

作     者：Debao Liu Yichi Liu Yan Huang Rong Song Minfang Chen 

作者机构：School of Materials Science and Engineering Tianjin University of Technology BCAST Brunel University 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2014年第24卷第5期

页      面：452-457页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：the supports from the National Natural Science Foundation of China (Nos. 51271131 and 51311130136) 

主　　题：Mg–Zn–Ca alloy Solidification cooling rate Microstructure Corrosion resistance 

摘      要：This study was carried out to investigate the effect of solidification cooling rate on the corrosion resistance of an Mg–Zn–Ca alloy developed for biomedical applications. A wedge shaped copper mould was used to obtain different solidification cooling rates. Electrochemical and immersion tests were employed to measure the corrosion resistance of Mg–Zn–Ca alloy. It was found that increasing cooling rate resulted in a significant improvement in the corrosion resistance of the Mg–Zn–Ca alloy. The findings were explained in terms of solidification behaviour in association with the change in solubility of the alloying elements, microstructural homogeneity and refinement and chemical homogeneity as well as the increased cooling rates.