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MRI-compatible Nb-60Ta-2Zr alloy for vascular stents.: Electrochemical corrosion behavior in simulated plasma solution
Li, Hui-Zhe; Zhao, Xu; Xu, Jian; jianxu@imr.ac.cn
2015
发表期刊MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
ISSN0928-4931
卷号56页码:205-214
摘要Using revised simulated body fluid (r-SBF), the electrochemical corrosion behavior of an Nb-60Ta-2Zr alloy for MRI compatible vascular stents was characterized in vitro. As indicated by XPS analysis, the surface passive oxide film of approximately 1.3 nm thickness was identified as a mixture of Nb2O5, Ta2O5 and ZrO2 after immersion in the r-SBF. The Nb-60Ta-2Zr alloy manifests a low corrosion rate and high polarization resistance similar to pure Nb and Ta, as shown by the potentiodynamic polarization curves and EIS. Unlike 316L stainless steel and the L605 Co-Cr alloy, no localized corrosion has been detected. Semiconducting property of passive film on the Nb-60Ta-2Zr alloy was identified as the n-type, with growth mechanism of high-field controlled growth. The excellent corrosion resistance in simulated human blood enviroment renders the Nb-60Ta-2Zr alloy promising as stent candidate material. (C) 2015 Elsevier B.V. All rights reserved.
部门归属[li, hui-zhe ; zhao, xu ; xu, jian] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
关键词Niobium Corrosion Simulated Plasma Vascular Stents Passive Film
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75006
专题中国科学院金属研究所
通讯作者jianxu@imr.ac.cn
推荐引用方式
GB/T 7714
Li, Hui-Zhe,Zhao, Xu,Xu, Jian,et al. MRI-compatible Nb-60Ta-2Zr alloy for vascular stents.: Electrochemical corrosion behavior in simulated plasma solution[J]. MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS,2015,56:205-214.
APA Li, Hui-Zhe,Zhao, Xu,Xu, Jian,&jianxu@imr.ac.cn.(2015).MRI-compatible Nb-60Ta-2Zr alloy for vascular stents.: Electrochemical corrosion behavior in simulated plasma solution.MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS,56,205-214.
MLA Li, Hui-Zhe,et al."MRI-compatible Nb-60Ta-2Zr alloy for vascular stents.: Electrochemical corrosion behavior in simulated plasma solution".MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS 56(2015):205-214.
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