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

被引：0
作者：
Ying Liu
Hao-Jie Wang
Shu-Jie Pang
Tao Zhang
机构：
[1] Beihang University,Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering
[2] Beihang University,School of Physics and Nuclear Energy Engineering
[3] Beihang University,Beijing Advanced Innovation Centre for Biomedical Engineering
来源：
Rare Metals | 2020年 / 39卷
关键词：
Ti-based alloy; Bulk metallic glass; Glass forming ability; Bio-corrosion resistance; Mechanical properties;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Ti47Cu38−xZr7.5Fe2.5Sn2Si1Ag2Tax (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–6Al–4V 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 bearing 2 at% Ta exhibits the optimal integration of mechanical properties, including the compressive fracture strength exceeding 2000 MPa, relative low Young’s modulus of 98 GPa, plastic strain of 3.4% and high hardness of HV 599. 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.
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页码：688 / 694
页数：6
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