Microstructure and Mechanical Properties of Ti-ZrO₂ Composites Fabricated by Spark Plasma Sintering

Abstract:

This study aims to investigate the microstructure and mechanical properties of Ti-ZrO₂ composites and ZrO₂/Ti functionally graded materials (FGMs) fabricated by spark plasma sintering (SPS). SPS has been conducted in a vacuum at 1400 oC under the uniaxial pressure of 30 MPa. Mechanical properties such as hardness and elastic modulus of Ti-ZrO₂ composites have been systematically investigated using micro-Vickers and nanoindentation. The experimental results demonstrate that the mechanical properties of Ti are dramatically improved by an addition of small amount of ZrO₂. There is almost no effect from the presence of Y₂O₃ in ZrO₂ on the hardness of Ti-ZrO₂ composites. ZrO₂/Ti FGMs have been successfully fabricated, and mechanical properties of the FGMs have been examined.

• Periodical: Key Engineering Materials (Volume 520)
• Pages: 269-275
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.520.269
• Online since: August 2012
• Authors: Hideaki Tsukamoto, Takahiro Kunimine, Motoko Yamada, Hisashi Sato, Yoshimi Watanabe
• Keywords: Micro Vickers Hardness, Nanoindentation, Spark Plasma Sintering (SPS), Ti Matrix Composite, Titanium Oxide, ZrO₂/Ti Functionally Graded Materials

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