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.
Original language | English |
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Pages (from-to) | 341-348 |
Number of pages | 8 |
Journal | Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals |
Volume | 82 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2018 |
Keywords
- Biomaterial
- Metal/ceramics composite
- Spark plasma sintering
- Titanium
- Zirconia
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys
- Materials Chemistry