Effect of Ag on the Microstructure, Mechanical and Bio-corrosion Properties of Fe-30Mn Alloy

• 来源期刊: 金属学报（英文版）
• 年，卷（期）: 2019,（11）
• 页码范围: 1337-1345
• 页数: 9页
• 语种: 英文

摘要

In the current work,biodegradable Fe-30Mn-XAg (X=1,2,5,10 wt％) alloys were prepared by the rapid solidification with copper-mold-casting technology.Phase analysis demonstrates that Fe-30Mn-XAg alloys consist of austenite γ phase with a fcc structure and martensite e phase with a hcp structure.The yield strength of the samples increases with increasing Ag contents.Compared with Fe-30Mn alloy,the degradation rates of Fe-30Mn-XAg in Hank's solution are significantly improved.Cytotoxicity evaluation reveals that the Fe-30Mn-lAg and Fe-30Mn-2Ag alloys perform less toxicity on the Human Umbilical Vein Endothelial Cells (HUVEC),while Fe-30Mn-5Ag and Fe-30Mn-10Ag alloys perform no toxicity on it.The contact angles of deionized water on the Fe-30Mn-XAg alloy surface were ranged from 55° to 69°,which is beneficial to the adhesion and growth of the cells.Besides,the addition of Ag leads to a much lower M/H slope,particularly for the Fe-30Mn-5Ag alloy exhibiting a non-magnetic property as SS316L.Therefore,the present Fe-30Mn-XAg alloys would be potential candidates for degradable metals.