Microstructure and corrosion properties of Mg-Zn-Ca-Nd alloy for biomedical application

被引：2
|
作者：
Jiang Dongmei [1 ]
Cao Zhanyi [1 ]
Guo Liang [1 ]
Sun Xu [1 ]
Zhang Jinling [1 ]
机构：
[1] Jilin Univ, Key Lab Automobile Mat, Minist Educ, Changchun 130025, Peoples R China
来源：
ADVANCED ENGINEERING MATERIALS III, PTS 1-3 | 2013年 / 750-752卷
关键词：
Mg-Zn-Ca-Nd alloy; Neodymium (Nd); Microstructure; corrosion properties; MECHANICAL-PROPERTIES; SOLID-SOLUTION; BEHAVIORS;
D O I：
10.4028/www.scientific.net/AMR.750-752.756
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The microstructure and corrosion properties of the as-cast Mg-Zn-Ca-Nd alloys were investigated in this study. The results showed that the alloy was mainly composed of alpha-Mg solid solution and the secondary phases of MgZn, Ca2Mg6Zn3 and Mg41Nd5. The portion of precipitated phases was increased with the increment of Nd content. Both electrochemical measurement and immersion test indicated that Mg-4Zn-0.5Ca-1.0Nd had the best corrosion resistance in SBF solution. This is attributed to a combination of (1) the uniform microstructure of alloy, and (2) a lower volume fraction of second phases. In the Mg-4Zn-0.5Ca-3.0Nd alloy, the corrosion rate might slow down due to finer dendrite cells were surrounded by the more continuous second phases along the grain boundary and in the alpha-Mg matrix.
引用
收藏
页码：756 / 759
页数：4
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