生物医用Ta-Zr合金的制备及性能

发布时间：2018-03-06 16:20

本文选题：生物材料　切入点：Ta-Zr合金　出处：《中国有色金属学报》2017年10期 　论文类型：期刊论文

【摘要】：采用粉末冶金方法,应用真空烧结技术对Ta-xZr(x=20,30,40,50,摩尔分数,%)合金进行研究,制备出力学性能良好的高致密Ta-Zr合金。利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、X射线能谱仪(EDS)和电子万能试验机对样品的相成分、表面形貌及力学性能进行检测与观察。结果表明:Ta-Zr合金烧结过程中没有第二相形成,有层片状Ta组织析出。抗拉强度在181.0~290.2 MPa范围内变化,弹性模量在16.1~20.9 GPa范围内变化,随Ta含量的增加均呈现出先增大后减小的趋势。其中Ta-30Zr与人体密质骨力学相容性好,有望成为理想的骨替代材料。
[Abstract]:By means of powder metallurgy and vacuum sintering technology, the alloy Ta-xZrX _ (20) ~ (30) ~ (40 ~ (50), mole fraction) was studied. A high density Ta-Zr alloy with good mechanical properties was prepared. The phase composition of the sample was studied by X-ray diffractometer, scanning electron microscope (SEM) and electronic universal testing machine (EDS). The surface morphology and mechanical properties of the alloy were examined and observed. The results showed that there was no second phase formation in the sintering process of the W Ta-Zr alloy, and the lamellar Ta structure was precipitated. The tensile strength varied in the range of 181.0 ~ 290.2 MPa, and the elastic modulus varied in the range of 16.1 ~ 20.9 GPa. With the increase of Ta content, the content of Ta-30Zr increases first and then decreases, and Ta-30Zr has good compatibility with human dense bone mechanics, so it is expected to be an ideal substitute for bone.
【作者单位】：中南大学粉末冶金国家重点实验室;
【基金】：国家自然科学基金资助项目(51274247) 中南大学中央高校基本科研业务费专项资金资助(2016zzts033)~~
【分类号】：R318.08;TF125

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