State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
J Mech Behav Biomed Mater. 2013 Dec;28:309-19. doi: 10.1016/j.jmbbm.2013.08.016. Epub 2013 Aug 28.
The entangled titanium materials with various porosities have been investigated in terms of the flexural and compressive mechanical properties and the deformation and failure modes. The effect of the sintering parameters on the mechanical properties and the porosity reduction has been comprehensively studied. The results indicate that both the flexural and compressive mechanical properties increase significantly as the porosity decreases. In the porosity range investigated the flexural elastic modulus is in the range of 0.05-6.33GPa, the flexural strength is in the range of 9.8-324.9MPa, the compressive elastic modulus is in the range of 0.03-2.25GPa, and the compressive plateau stress is in the range of 2.3-147.8MPa. The mechanical properties of the entangled titanium materials can be significantly improved by sintering, which increase remarkably as the sintering temperature and/or the sintering time increases. But on other hand, the sintering process can induce the porosity reduction due to the oxidation on the titanium wire surface.
已经研究了具有不同孔隙率的缠结钛材料的弯曲和压缩力学性能以及变形和破坏模式。综合研究了烧结参数对力学性能和孔隙率降低的影响。结果表明，随着孔隙率的降低，弯曲和压缩力学性能都显著提高。在所研究的孔隙率范围内，弯曲弹性模量在 0.05-6.33GPa 范围内，弯曲强度在 9.8-324.9MPa 范围内，压缩弹性模量在 0.03-2.25GPa 范围内，压缩平台应力在 2.3-147.8MPa 范围内。通过烧结可以显著提高缠结钛材料的力学性能，随着烧结温度和/或烧结时间的增加，力学性能显著提高。但另一方面，由于钛丝表面的氧化，烧结过程会导致孔隙率降低。
