Effect of Different Metal Cations on the Degradation Behavior of Biomedical Magnesium Alloy

被引：0
|
作者：
Li Ying [1 ]
Ning Chengyun [1 ]
Li Honglong [1 ]
Tan Guoxin [2 ]
Yu Zunxiong [1 ]
Wang Xiaolan [1 ]
机构：
[1] S China Univ Technol, Guangzhou 510641, Guangdong, Peoples R China
[2] Guangdong Univ Technol, Guangzhou 510006, Guangdong, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2015年 / 44卷 / 10期
关键词：
degradation; metal cation; magnesium alloy; electrochemical detection; simulated body fluid; CORROSION BEHAVIOR; BODY; CHLORIDE; ZINC;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The degradation property of biomedical magnesium alloy is the key to determine its application on cardiovascular stents and bone replacement material, etc. In this paper, we discussed the effect of degradation on magnesium alloy with various cations. AZ31B magnesium alloy samples were immersed into NaCl aq., KCl aq., MgCl2 aq. and CaC12 aq. with the same concentration of cl(-) used as body. fluid. The potentiodynamic polarization curve (PPC) and electrochemical impedance spectroscopy (EIS) of these magnesium samples were analyzed. Results show that the corrosion potential and impedance have the similar tendency with the pH values and gravimetric curve. Namely, the metal cations affect the degradation property of magnesium alloy directly and the order is NaCl> KCl> CaCl2> MgCl2. Na+ is superior to other cations in magnesium alloy degradation.
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页码：2566 / 2570
页数：5
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