Porous Ti-Nb alloys with different contents of Nb elements were prepared by vacuum sintering technology.The effects of Nb element contents on pore morphologies,porosities,microstructures,elastic modulus,and wear resistances of porous Ti-Nb alloys were investigated.The results show that with the ascent of Nb element contents,the pore morphology of porous Ti-Nb alloys does not change significantly,and the porosities increase gradually.The porous Ti-Nb alloys are mainly composed of α-phase and β-phase,in which,due to the β-phase stabilizing effect of Nb elements,the volume fraction of the β-phase in the alloys increases significantly with the increase of the Nb element content,and the compressive strength and elastic modulus of the alloys decrease gradually.The wear resistance of porous Ti-Nb alloys in simulated body fluid (SBF) is mainly related to the volume ratio of β-phase to α-phase.When the volume ratio of β-phase to α-phase exceeds 61.7/38.3,the wear resistance of the alloy gradually improves.
关键词
多孔Ti-Nb合金/组织演化/弹性模量/摩擦磨损性能
Key words
porous Ti-Nb alloy/microstructure evolution/elastic modulus/friction and wear property
维普
万方数据