Microstructure, mechanical behavior and biocompatibility of powder metallurgy Nb-Ti-Ta alloys as biomedical material
Microstructure, mechanical behavior and biocompatibility of powder metallurgy Nb-Ti-Ta alloys as biomedical material
复制标题
生物医用材料粉末冶金Nb-Ti-Ta合金的显微组织、力学行为及生物相容性
DOI：
10.1016/j.msec.2016.10.043
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发表时间：
2017-02-01
影响因子：
7.9
通讯作者：
Ruan, Jianming
中科院分区：
文献类型：
--
作者：
Liu, Jue;Chang, Lin;Ruan, Jianming
研究了Nb-25 Ti-xTa（x = 10，15，20，25，35 at.%）合金的显微组织、力学性能、磷灰石形成能力和体外实验。粉末冶金制造的合金。结果表明，该合金的致密度可达80%以上.同时，Ta含量的增加提高了烧结态合金的抗拉强度、弹性模量和硬度。随着烧结温度的升高，β相的微观结构变得更加均匀，导致模量和强度降低。此外，由于不含细胞毒性元素，该合金显示出良好的生物相容性，并适合于磷灰石的形成和细胞粘附。总之，Nb-25 Ti-xTa合金在生物医学应用中具有潜在的用途，其机械和生物学性能在这项工作中进行了评估。(C)2016爱思唯尔B. V.保留所有权利。
Microstructures, mechanical properties, apatite-forming ability and in vitro experiments were studied for Nb-25Ti-xTa (x = 10, 15, 20, 25, 35 at.%) alloys fabricated by powder metallurgy. It is confirmed that the alloys could achieve a relative density over 80%. Meanwhile, the increase in Ta content enhances the tensile strength, elastic modulus and hardness of the as-sintered alloys. When increasing the sintering temperatures, the microstructure became more homogeneous for beta phase, resulting in a decrease in the modulus and strength. Moreover, the alloys showed a good biocompatibility due to the absence of cytotoxic elements, and were suitable for apatite formation and cell adhesion. In conclusion, Nb-25Ti-xTa alloys are potentially useful in biomedical applications with their mechanical and biological properties being evaluated in this work. (C) 2016 Elsevier B.V. All rights reserved.