Materials Letters, Dec 1, 2012, Vol.88, p.1(4)
To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.matlet.2012.08.012 Byline: Lin Mao (a), Guangyin Yuan (a)(b), Shaohua Wang (a), Jialin Niu (a), Guohua Wu (a)(b), Wenjiang Ding (a)(b) Keywords: Biomaterials; Metals and alloys; Cyclic polarization; Uniform corrosion; Artificial plasma Abstract: Magnesium alloys have been currently investigated as potential biodegradable implant materials. In this study, a patent Mg alloy Mg-Nd-Zn-Zr (Jiao Da BioMg, hereafter, denoted as JDBM) was researched as a potential biodegradable stent material in comparison with the clinical trial Mg alloy WE43. The corrosion behaviors of the as-extruded JDBM and WE43 were investigated in artificial plasma by in vitro degradation measurements and cyclic polarization tests. The results showed that the corrosion rate of JDBM was much lower than that of WE43 alloy. Most importantly, the JDBM alloy showed a uniform corrosion behavior in artificial plasma, which could avoid stress concentration as well as a rapid reduction in the mechanical integrity. The investigations indicated that the as-extruded JDBM alloy may be a promising implant material suitable for stent applications. Author Affiliation: (a) National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China (b) Key State Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, China Article History: Received 22 May 2012; Accepted 6 August 2012
Biological Products -- Analysis ; Corrosion (Chemistry) -- Analysis ; Magnesium (Metal) -- Analysis ; Magnesium Alloys -- Analysis
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