本文研究了采用放電等離子燒結(jié)（SPS）技術(shù)制備的Zr-30Ta和Zr-25Ta-5Ti合金的組織、力學(xué)性能和耐蝕性。實(shí)驗(yàn)結(jié)果表明,采用SPS工藝制備的Zr-Ta-Ti合金孔隙率低,相對(duì)密度為96%～98%。XRD和TEM分析表明,Zr-30Ta合金由α+β相組成,Zr-25Ta-5Ti合金屬于近β型合金,含有少量α和ω相。隨著Ti的加入,合金的彈性模量由（99.5±7.2）GPa（Zr-30Ta）下降到（73.6±6.3）GPa（Zr-25Ta-5Ti）。此外,與CP-Ti和Ti-6Al-4V合金相比,Zr-Ta-Ti合金由于在合金表面鈍化膜中生成更穩(wěn)定的ZrO₂和Ta₂O₅而具有更強(qiáng)的耐蝕性。以上研究表明,Zr-Ta-Ti合金是一種很有前途的新型金屬生物材料。 

【文章來(lái)源】：Journal of Central South University. 2020,27(08)EISCICSCD

【文章頁(yè)數(shù)】：13 頁(yè)

【文章目錄】：
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



本文編號(hào)：3480593