Preparation and in vitro degradation characterization of Si-containing coating on AZ31B alloy

被引:6
|
作者
Wang, Qiang [1 ]
Tan, Lili [2 ]
Yang, Ke [2 ]
机构
[1] China Med Univ, Sch Stomatol, Shenyang 110002, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
基金
中国国家自然科学基金; 国家高技术研究发展计划(863计划);
关键词
Magnesium alloy; Si-containing coating; Degradation; BIODEGRADABLE MAGNESIUM IMPLANTS; SIMULATED BODY-FLUID; CORROSION BEHAVIOR; CA ALLOY; MECHANICAL-PROPERTIES; VIVO CORROSION; MG ALLOY; SILICON; SURFACE; BONE;
D O I
10.1080/10667857.2016.1254402
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Surface modification can be an effective way to control the biodegradation behaviour of magnesium alloys. In the present study, Si-containing coating was prepared on the surface of AZ31B alloy to decrease the degradation of the alloy by a chemical deposition method. The degradation behaviour of Si-containing coating in simulated body fluid was discussed. The results showed that the coating was mainly composed of Mg2SiO4, MgO and SiO2. The formation mechanism of the Si-containing coating on AZ31B alloy was proposed. The bonding strength of the coating with the substrate was higher than 24MPa. The degradation of the coated alloy in simulated body fluid decreased compared to that of the uncoated alloy. Apatite was formed on the surface of Si-containing coated AZ31B alloy after immersion in Hank's solution. The degradation mechanism of the Si-containing coated AZ31B alloy in Hank's solution is proposed. It is concluded that Si-containing coating results in decreased degradation of AZ31B alloy, making it more suitable for clinical application.
引用
收藏
页码:828 / 835
页数:8
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