Thermal Characteristics,Mechanical Properties,In Vitro Degradation and Cytotoxicity of Novel Biodegradable Zn-Al-Mg and Zn-Al-Mg-xBi Alloys
来源期刊：Acta Metallurgica Sinica2017年第3期
论文作者：H.R.Bakhsheshi-Rad E.Hamzah H.T.Low M.Kasiri-Asgarani M.Medraj
文章页码：201 - 211
摘 要：Ternary Zn-0.5Al-0.5Mg and quaternary Zn-0.5Al-0.5Mg-xBi（x = 0.1,0.3 and 0.5） alloys were studied to evaluate the thermal and structural characteristics,mechanical properties,cytotoxicity and in vitro degradation behavior.Thermal analysis and microstructural observations showed that Zn-0.5Al-0.5Mg is composed of FCC-A1 + HCPZn + Mg2（Zn,Al）11 while a new phase α-Mg3Bi2 appeared after the addition of Bi to the Zn-0.5Al-0.5Mg ternary alloy.The results revealed that the quaternary Zn-Al-Mg-Bi alloys have higher tensile strength,elongation and hardness but slightly lower corrosion resistance than those of the ternary Zn-Al-Mg alloy.Based on the MTT assay,the Zn-Al-Mg and Zn-Al-Mg-Bi alloys were found to be biocompatible,and thus,they can be considered for further investigation in an in vivo environment.
H.R.Bakhsheshi-Rad1，E.Hamzah2，H.T.Low2，M.Kasiri-Asgarani1，M.Medraj5,6
1. Advanced Materials Research Center,Department of Materials Engineering,Najafabad Branch,Islamic Azad University2. Department of Materials,Manufacturing and Industrial Engineering,Faculty of Mechanical Engineering,Universiti Teknologi Malaysia6. Department of Mechanical Engineering,Concordia University
摘 要：Ternary Zn-0.5Al-0.5Mg and quaternary Zn-0.5Al-0.5Mg-xBi（x = 0.1,0.3 and 0.5） alloys were studied to evaluate the thermal and structural characteristics,mechanical properties,cytotoxicity and in vitro degradation behavior.Thermal analysis and microstructural observations showed that Zn-0.5Al-0.5Mg is composed of FCC-A1 + HCPZn + Mg2（Zn,Al）11 while a new phase α-Mg3Bi2 appeared after the addition of Bi to the Zn-0.5Al-0.5Mg ternary alloy.The results revealed that the quaternary Zn-Al-Mg-Bi alloys have higher tensile strength,elongation and hardness but slightly lower corrosion resistance than those of the ternary Zn-Al-Mg alloy.Based on the MTT assay,the Zn-Al-Mg and Zn-Al-Mg-Bi alloys were found to be biocompatible,and thus,they can be considered for further investigation in an in vivo environment.
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