縫隙腐蝕對(duì)Fe-30Mn-1C合金降解速率的影響

縫隙腐蝕對(duì)Fe-30Mn-1C合金降解速率的影響The effect of crevice corrosion on the degradation rate of Fe-30Mn-1C alloy

鐵基金屬以其可降解性、優(yōu)良的綜合力學(xué)性能和生物相容性，具備成為可降解心血管支架材料的巨大潛力。然而，提高降解速率是目前鐵基金屬作為可降解支架材料的一個(gè)亟待解決的核心問題，本研究通過對(duì)鐵基合金引入孔隙結(jié)構(gòu)來提高其整體降解速率，結(jié)果顯示縫隙腐蝕可顯著提高Fe-30Mn-1C 合金降解速率。

Iron-based metals have become one of most potential materials candidates as biodegradable stent materials and attracted widespread concern because of their excellent mechanical properties and biocompatibility. However, it is still a core problem how to accelerate the degradation rate of iron-based metals used as biodegradable stents. The idea of crevice corrosion is to introduce crevice corrosion process through designing pore structure on the specimen, which may improve the overall rate of degradation in this study. The experiment results show that the degradation rate of Fe-30Mn-1C alloys has been increased to varying degrees through crevice corrosion.

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