About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
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Manufacturing and Processing of Advanced Ceramic Materials
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| Presentation Title |
Superior fracture toughness of ZrO2/Al2O3 nano-nano composite with eutectic composition |
| Author(s) |
Manshi Ohyanagi, Yuto Koyanagi, Shiryu Fujinaka, Kenshiro Shirai, Takahito Imai, Yoshihiro Shimizu |
| On-Site Speaker (Planned) |
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| Abstract Scope |
ZrO2 is known to sinter with solid-soluble additive such as Y2O3 as stabilizer. Tetragonal 3Y-ZrO2 solid solution with Y2O3 can be also composited with Al2O3 to achieve high-strength ceramics with high fracture toughness. In this study, mechanochemical reaction by high-energy ball milling was used to synthesize ZrO2/Al2O3 containing tetragonal phase in a short time by high-energy ball milling of only both of pure ZrO2 and Al2O3 in eutectic composition with no rare earth oxide. When this powder was sintered by SPS below the eutectic temperature, tetragonal ZrO2 solid-solving Al2O3 was observed, and a significant improvement in fracture toughness compared to 3Y-ZrO2/Al2O3 eutectic composites was confirmed. |