Microstructures and Properties of Biomedical Mg-Zn-Sn-Zr Rolled Alloys  

作　　者：周生刚 ZHANG Daxin XU Yang DUAN Jihao LI Tao LIU Junfeng WANG Peng 曹勇 ZHOU Shenggang;ZHANG Daxin;XU Yang;DUAN Jihao;LI Tao;LIU Junfeng;WANG Peng;CAO Yong(Faculty of Material Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]Faculty of Material Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2024年第3期766-773,共8页武汉理工大学学报（材料科学英文版）

基　　金：Funded by National Natural Science Foundation of China(Nos.52161024,51761021);Ten Thousand Talents Program of Yunnan Province(No.YNWR-QNJ-2018-044)。

摘　　要：The as-cast Mg-2.0Zn-1.5Sn-xZr(x=0,0.4,0.6,0.8,1.0 wt%)alloy was rolled with the pressure less than 5%each time.The microstructure,mechanical properties,corrosion properties and biocompatibility of the alloy were investigated.The microstructure of the alloy was observed and analyzed by scanning electron microscope,and the tensile test was carried out by universal tensile machine.The corrosion resistance of the alloy in Hank's solution was studied by hydrogen evolution experiment and electrochemical test,and the biocompatibility of the alloy was tested by L929 cells.The results show that Mg-2Zn-1.5Sn-xZr alloy has excellent mechanical properties.The elongation of Mg-2Zn-1.5Sn-xZr alloy decreases with the increase of Zr content,but the tensile strength first increases and then decreases with the increase of Zr concentration.When the Zr content is 0.8 wt%,the maximum tensile strength of the alloy is 235 MPa.The results of hydrogen evolution experiment and electrochemical analysis show that the corrosion resistance of the alloy is the best when the Zr content is 0.8 wt%,and all the five alloys have high biocompatibility.In conclusion,the rolled alloy has good properties and has broad application prospects in the field of biomaterials.

关 键 词：magnesium alloy corrosion performance mechanical properties BIOCOMPATIBILITY 

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]