日本金属学会誌

J. Japan Inst. Met. Mater, Vol. 82, No. 09 (2018),
pp. 341-348

Formation of Titanium/Zirconia Based Biomaterial Fabricated by Spark Plasma Sintering

Shoichi Kikuchi 1, Kazutoshi Katahira 2 and Jun Komotori 3

1 Department of Mechanical Engineering, Faculty of Engineering, Shizuoka University
2 Materials Fabrication Laboratory, RIKEN
3 Department of Mechanical Engineering, Faculty of Science and Technology, Keio University

Abstract:

New biomaterials were fabricated by sintering powders of commercially pure titanium (CP-Ti) and partially-stabilized zirconia (PSZ). The Ti/PSZ composites with different mass fraction of PSZ were consolidated by spark plasma sintering (SPS) at 1173 K and 1373 K. The microstructures of composites were characterized using a scanning electron microscope (SEM), an energy dispersive X-ray spectrometer (EDS), X-ray photoelectron spectroscopy (XPS) and an X-ray diffraction (XRD). Vickers hardness tests, reciprocating wear tests, fracture toughness measurements, cell culture tests and electrochemical polarization tests were conducted to discuss their capability for biomaterials as a slide member. The composites with high wear resistance were achieved by sintering at 1373 K with high mass fraction of PSZ; however, fracture toughness showed low value. In contrast, the composites sintered at relatively low temperature of 1173 K with low mass fraction of PSZ showed high wear resistance and fracture toughness. Furthermore, electrochemical characteristics and biocompatibility of composites sintered at 1173 K tended to improve as the mass fraction of PSZ decreased.

[doi:10.2320/jinstmet.J2018017]


(Received 2018/03/19)

Keywords:

metal/ceramics composite, titanium, zirconia, spark plasma sintering, biomaterial


PDF(Free)PDF (Free)     Table of ContentsTable of Contents

Please do not copy without permission.