Ti-Zr-Cu-Fe-Sn-Si-Ag-Ta bulk metallic glasses with good corrosion resistance as potential biomaterials  

作　　者：Ying Liu Hao-Jie Wang Shu-Jie Pang Tao Zhang 

机构地区：[1]Key Laboratory of Aerospace Materials and Performance(Ministry of Education),School of Materials Science and Engineering,Beihang University,Beijing 100191,China [2]School of Physics and Nuclear Energy Engineering,Beihang University,Beijing 100191,China [3]Beijing Advanced Innovation Centre for Biomedical Engineering,Beihang University,Beijing 100191,China

出　　处：《Rare Metals》2020年第6期688-694,共7页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51671008 and 51701008);the Aeronautical Science Foundation of China(No.2013ZE51060);China Postdoctoral Science Foundation(No.2017M620575)。

摘　　要：Ti47Cu38-xZr7.5Fe2.5Sn2 Si1 Ag2 Tax(x=1-4;at%,the same below)bulk metallic glasses(BMGs)with good bio-corrosion resistance and mechanical properties were fabricated by copper mold casting.Critical diameter of the Ti-based BMGs with 1 at%-4 at%Ta was 3 mm.The Ta-incorporated Ti-based BMGs exhibit higher open current potential and parallel passive current density in comparison with those of Ti-6 Al-4 V alloy in 0.9 wt%NaCl and Hank’s solution,implying their good corrosion resistance.The pitting corrosion potential of the Ti-based BMGs gradually increases up to about 1.25 V with Ta addition increasing up to 4 at%in 0.9 wt%NaCl solution.Among the present Ti-based BMGs,the alloy bearing2 at%Ta exhibits the optimal integration of mechanical properties,including the compressive fracture strength exceeding 2000 MPa,relative low Young’s modulus of98 GPa,plastic strain of 3.4%and high hardness of HV599.The Ta-bearing Ti-based bulk metallic glasses with integration of relative high GFA,good mechanical properties and high bio-corrosion resistance are beneficial for biomedical applications.

关 键 词：Ti-based alloy Bulk metallic glass Glass forming ability Bio-corrosion resistance Mechanical properties 

分 类 号：TG139.8[一般工业技术—材料科学与工程]