The deteriorated degradation resistance of Mg alloy microtubes for vascular stent under the coupling effect of radial compressive stress and dynamic medium  

作　　者：Mengyao Liu Yabo Zhang Qingyuan Zhang Yan Wang Di Mei Yufeng Sun Liguo Wang Shijie Zhu Shaokang Guan 

机构地区：[1]School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China [2]Henan Key Laboratory of Advanced Magnesium Alloys,Zhengzhou 450002,China [3]Key Laboratory of Advanced Materials Processing&Mold Ministry of Education,Zhengzhou 450002,China

出　　处：《Journal of Magnesium and Alloys》2024年第2期573-585,共13页镁合金学报（英文）

基　　金：the financial support of the National Key Research and Development Program of China(2018YFC1106703);the Key Projects of the Joint Fund of the National Natural Science Foundation of China(U1804251)。

摘　　要：The degradation of Mg alloys relates to the service performance of Mg alloy biodegradable implants.In order to investigate the degradation behavior of Mg alloys as vascular stent materials in the near service environment,the hot-extruded fine-grained Mg-Zn-Y-Nd alloy microtubes,which are employed to manufacture vascular stents,were tested under radial compressive stress in the dynamic Hanks'Balanced Salt Solution(HBSS).The results revealed that the high flow rate accelerates the degradation of Mg alloy microtubes and its degradation is sensitive to radial compressive stress.These results contribute to understanding the service performance of Mg alloys as vascular stent materials.

关 键 词：Mg alloy MICROTUBES Degradation behavior Radial compressive stress Dynamic conditions 

分 类 号：R318.08[医药卫生—生物医学工程] TG146.22[医药卫生—基础医学]