Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7220745 | Materials & Design (1980-2015) | 2015 | 22 Pages |
Abstract
A kind of graded porous titanium-magnesium (Ti-Mg) composite, i.e., about 1-1.5Â mm thick porous Ti layer is wrapped over the internal dense Ti-Mg composite, has been successfully fabricated by infiltration casting and acid etching. The outer porous Ti layer maintains its initial entangled structure, which can be easily adjusted to the ideal porosity and the porous structure. The thickness of the porous layer can be controlled by etching time. When the outer porous layer accounted for 41.6-42.4% of the total volume of the cylindrical sample, the compressive strength and the Young's modulus of the as-prepared graded porous composite are 110Â MPa and 5Â GPa, respectively, being comparable to that of natural bone. The outer porous layer provides good osteoconduction ability, and the internal dense Ti-Mg composite contributes to the monolithic strength and stiffness. Such biomechanical properties suggest its potentials for load-bearing bio-applications.
Related Topics
Physical Sciences and Engineering
Engineering
Engineering (General)
Authors
Guofeng Jiang, Qiuyan Li, Cunlong Wang, Jie Dong, Guo He,