缝隙腐蚀对Fe-30Mn-1C合金降解速率的影响  

Effect of Crevice Corrosion on the Degradation Rate of Fe-30Mn-1C Alloy

作　　者：马政[1] 陆喜[1] 高明[1] 谭丽丽[1] 杨柯[1] MA Zheng;LU Xi;GAO Ming;TAN Lili;YANG Ke(Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China)

机构地区：[1]中国科学院金属研究所,沈阳110016

出　　处：《金属学报》2018年第7期1010-1018,共9页Acta Metallurgica Sinica

基　　金：国家重点基础研究发展计划项目Nos.2012CB619101和2012CB619102;国家高技术研究发展计划项目No.2015AA033701~~

摘　　要：为了提高Fe-30Mn-1C合金的降解速率,采用激光技术,在样品上分别加工不同孔径的孔隙,将支架的设计与缝隙腐蚀结合起来,通过体外浸泡失重实验和电化学测试,研究了合金的降解行为,结果表明缝隙腐蚀可显著提高Fe-30Mn-1C合金的降解速率。Fe-30 Mn-1 C alloy has great potential to become degradable cardiovascular stent material due to its degradability, excellent comprehensive mechanical properties and biocompatibility. In this work, in order to improve the degradation rate of Fe-30 Mn-1 C alloy, laser technology was used to process pores with different pore diameters on the samples, and the design of the scaffold was combined with crevice corrosion. The degradation behavior of the alloy was studied through in vitro soaking weight loss experiments and electrochemical tests. The results showed that crevice corrosion can increase the degradation rate of Fe-30 Mn-1 C alloy significantly.

关 键 词：铁基合金 可降解 缝隙腐蚀 心血管支架 

分 类 号：R318.08[医药卫生—生物医学工程]