[T13] Non Ferrous Materials

[15F-T13-02] Feasibility Study on the Application of Ti-Zr Alloys for Fabrication of Porous Ti-Based Biometals via Powder Metallurgy

*S.-J. Seo¹, T. Fujii¹, Y. Shimamura¹ (1.Shizuoka University, Japan)

キーワード：Biometal, Spark plasma sintering, Mechanical property

Biometals for medical implants are required to have both low stiffness and high strength. Although porous Ti with low stiffness has been proposed, its application to load-bearing biometals is difficult because of low strength. In this study, the feasibility of using Ti-Zr alloys as a scaffold material for porous biometals is investigated. Ti and Zr powders mixed in various volume fractions are simultaneously sintered by spark plasma sintering to fabricate dense compacts. As a result, the Ti-25Zr alloy exhibits the highest bending strength of 1510 MPa in the Ti-Zr alloys, while the bending strength of monolithic Ti is 918 MPa, indicating that the Ti-25Zr alloy is suitable as a scaffold of porous biometal.