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.
作者
马政
陆喜
高明
谭丽丽
杨柯
MA Zheng;LU Xi;GAO Ming;TAN Lili;YANG Ke(Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China)
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
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~~
关键词
铁基合金
可降解
缝隙腐蚀
心血管支架
iron-based alloy
biodegradable
crevice corrosion
cardiovascular stent
