Ti对放电等离子烧结Zr-Ta-Ti合金组织、力学性能及耐蚀性的影响（英文）

发布时间：2021-11-06 21:57

　　本文研究了采用放电等离子烧结（SPS）技术制备的Zr-30Ta和Zr-25Ta-5Ti合金的组织、力学性能和耐蚀性。实验结果表明,采用SPS工艺制备的Zr-Ta-Ti合金孔隙率低,相对密度为96%～98%。XRD和TEM分析表明,Zr-30Ta合金由α+β相组成,Zr-25Ta-5Ti合金属于近β型合金,含有少量α和ω相。随着Ti的加入,合金的弹性模量由（99.5±7.2）GPa（Zr-30Ta）下降到（73.6±6.3）GPa（Zr-25Ta-5Ti）。此外,与CP-Ti和Ti-6Al-4V合金相比,Zr-Ta-Ti合金由于在合金表面钝化膜中生成更稳定的ZrO₂和Ta₂O₅而具有更强的耐蚀性。以上研究表明,Zr-Ta-Ti合金是一种很有前途的新型金属生物材料。 

【文章来源】：Journal of Central South University. 2020,27(08)EISCICSCD

【文章页数】：13 页

【文章目录】：
1 Introduction
2 Experimental procedure
    2.1 Materials preparation
    2.2 Characterization
    2.3 Electrochemical corrosion measurement
3 Results
    3.1 Raw materials and phase identification
    3.2 Microstructure characteristics
    3.3 Mechanical properties
    3.4 Open-circuit potential(OCP)
    3.5 Potentiodynamic polarization
    3.6 Electrochemical impedance spectroscopy(EIS)
    3.7 Surface analyses
4 Discussion
    4.1 Effect of titanium addition on microstructure evolution of Zr-Ta-Ti alloys
    4.2 Effect of titanium addition on mechanical properties of Zr-Ta-Ti alloys
    4.3 Effect of titanium addition on electrochemical behavior of Zr-Ta-Ti alloys
5 Conclusions



本文编号：3480593