Development of New Ti-Fe-Ta and Ti-Fe-Ta-Zr System Alloys for Biomedical Applications
Development of New Ti-Fe-Ta and Ti-Fe-Ta-Zr System Alloys for Biomedical Applications
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用于生物医学应用的新型 Ti-Fe-Ta 和 Ti-Fe-Ta-Zr 系合金的开发
DOI：
10.2320/matertrans.46.1532
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发表时间：
2005
影响因子：
1.2
通讯作者：
T. Hanawa
中科院分区：
文献类型：
--
作者：
D. Kuroda;Hironori Kawasaki;S. Hiromoto;T. Hanawa
Ti-8 Fe-8 Ta、Ti-8 Fe-8 Ta-4 Zr和Ti-10 Fe-10 Ta-4 Zr等β型钛合金是一种新型的生物医用合金。根据所得的显微组织，讨论了所设计合金在不同热处理条件下力学性能的变化。此外，通过极化曲线测试，评价了合金在Hanks溶液中的耐蚀性。还分别对常规生物医用钛和钛合金cp-Ti和Ti-6Al-4V ELI进行极化以进行比较。所设计的合金经冷轧和固溶处理后的结构相仅为β相。固溶处理后的Ti-8 Fe-8 Ta、Ti-8 Fe-8 Ta-4 Zr和Ti-10 Fe-10 Ta-4 Zr的极限抗拉强度和断裂伸长率分别为1066 MPa和10%、1051 MPa和10%和1092 MPa和6%。Ti-8 Fe-8 Ta和Ti-8 Fe-8 Ta-4 Zr的强度高于传统的生物医用钛合金，如Ti-6Al-4V ELI、Ti-6Al-7 Nb和Ti-13 Nb-13 Zr。此外，Ti-8 Fe-8 Ta和Ti-8 Fe-8 Ta-4 Zr的断裂伸长率与Ti-6Al-4V ELI和Ti-6Al-7 Nb的断裂伸长率相等。设计的合金和传统的生物医用钛合金在Hanks溶液中自发钝化。当电位高于2.5 V时，cp-Ti和Ti-6Al-4V ELI的电流密度增加，而当电位高于3.5 V时，所设计的合金的电流密度突然增加。这表明所设计的合金具有优于cp-Ti和Ti-6Al-4V ELI的优点，即在生物环境中具有高的耐点蚀性。因此，本研究设计的新型β型钛合金Ti-8 Fe-8 Ta和Ti-8 Fe-8 Ta-4 Zr有望作为生物材料具有良好的性能。
β-type titanium alloys consisting of non-toxic elements, Ti-8Fe-8Ta, Ti-8Fe-8Ta-4Zr, and Ti-10Fe-10Ta-4Zr, were newly designed and developed for biomedical applications. Changes in the mechanical properties of the designed alloys with various heat treatments were discussed on the basis of the resultant microstructures. In addition, the corrosion resistance of the designed alloys was evaluated by polarization test in Hanks' solution. Conventional biomedical titanium and a titanium alloy, cp-Ti and Ti-6Al-4V ELI, respectively, were also polarized for comparison. The structural phase of the designed alloys after cold rolling and solution treatment was only the β phase. The ultimate tensile strength and elongation to fracture of Ti-8Fe-8Ta, Ti-8Fe-8Ta-4Zr, and Ti-10Fe-10Ta-4Zr after solution treatment were 1066 MPa and 10%, 1051 MPa and 10%, and 1092 MPa and 6%, respectively. Ti-8Fe-8Ta and Ti-8Fe-8Ta-4Zr have higher strength than conventional biomedical titanium alloys, such as Ti-6Al-4V ELI, Ti-6Al-7Nb, and Ti-13Nb-13Zr. In addition, the elongations to fracture of Ti-8Fe-8Ta and Ti-8Fe-8Ta-4Zr were equal to those of Ti-6Al-4V ELI and Ti-6Al-7Nb. The designed alloys and conventional biomedical titanium alloys were spontaneously passivated in Hanks' solution. The current density of cp-Ti and Ti-6Al-4V ELI was increased at a potential above 2.5 V. On the other hand, the current density of the designed alloys was abruptly increased at a potential above 3.5 V. This indicated that the designed alloys have an advantage over cp-Ti and Ti-6Al-4V ELI, namely, high resistance to pitting corrosion in biological environments. Therefore, the new β-type titanium alloys designed in this study, Ti-8Fe-8Ta and Ti-8Fe-8Ta-4Zr, are expected to have good properties as biomaterials.
DOI：
10.1016/s0921-5093(97)00808-3
发表时间：
1998-03-15
影响因子：
6.4
作者：
Kuroda, D;Niinomi, M;Yashiro, T
通讯作者：
Yashiro, T