Fabrication, pore structure and compressive behavior of anisotropic porous titanium for human trabecular bone implant applications

Fuping Li, Jinshan Li, Guangsheng Xu, Gejun Liu, Hongchao Kou, Lian Zhou

科研成果: 期刊稿件文章同行评审

102 引用 (Scopus)

摘要

Porous titanium with average pore size of 100-650. μm and porosity of 30-70% was fabricated by diffusion bonding of titanium meshes. Pore structure was characterized by Micro-CT scan and SEM. Compressive behavior of porous titanium in the out-of-plane direction was studied. The effect of porosity and pore size on the compressive properties was also discussed based on the deformation mode. The results reveal that the fabrication process can control the porosity precisely. The average pore size of porous titanium can be tailored by adjusting the pore size of titanium meshes. The fabricated porous titanium possesses an anisotropic structure with square pores in the in-plane direction and elongated pores in the out-of-plane direction. The compressive Young[U+05F3]s modulus and yield stress are in the range of 1-7.5. GPa and 10-110. MPa, respectively. The dominant compressive deformation mode is buckling of mesh wires, but some uncoordinated buckling is present in porous titanium with lower porosity. Relationship between compressive properties and porosity conforms well to the Gibson-Ashby model. The effect of pore size on compressive properties is fundamentally ascribed to the aspect ratio of titanium meshes. Porous titanium with 60-70% porosity has potential for trabecular bone implant applications.

源语言英语
页(从-至)104-114
页数11
期刊Journal of the Mechanical Behavior of Biomedical Materials
46
DOI
出版状态已出版 - 1 6月 2015

指纹

探究 'Fabrication, pore structure and compressive behavior of anisotropic porous titanium for human trabecular bone implant applications' 的科研主题。它们共同构成独一无二的指纹。

引用此