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- W2112593606 abstract "By introducing ZrO 2 (4Y) powder into the thermit, the solidified Al 2 O 3 -ZrO 2 (4Y) ceramic composites with eutectic and hypereutectic microstructures were prepared via combustion synthesis in high gravity field, and the microstructures and mechanical properties of the solidified ceramic composites were discussed. XRD, SEM and EDS showed that the Al 2 O 3 -33%ZrO 2 (4Y) as the eutectic were composed of random-orientated rod-shaped colonies consisting of a triangular dispersion of orderly submicron-nanometer t-ZrO 2 fibers, surrounded by inter-colony regions consisting of spherically-shaped micrometer t-ZrO 2 grains, whereas Al 2 O 3 -45%ZrO 2 (4Y) as the hypereutectic were comprised of spherically-shaped micron-meter t-ZrO 2 grains, surround by irregularly-shaped α-Al 2 O 3 grains and a few colonies. Compared to the directionally solidified Al 2 O 3 -ZrO 2 (Y 2 O 3 ), the increase in hardness and flexural strength of the eutectic obtained in current experiment was due to high densification, small-size defect and high fracture toughness induced by residual stress toughening and transformation toughening mechanisms; meanwhile, in despite of the moderate decrease in hardness, high flexural strength of the hypereutectic was considered to be a result of small-size defect and high fracture toughness induced by transformation toughening and microcrack toughening mechanisms." @default.
- W2112593606 created "2016-06-24" @default.
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- W2112593606 date "2014-03-01" @default.
- W2112593606 modified "2023-09-25" @default.
- W2112593606 title "Large Scale Al<sub>2</sub>O<sub>3</sub>-ZrO<sub>2</sub> (Y<sub>2</sub>O<sub>3</sub>) Eutectic and Hypereutectic Achieved by Combustion Synthesis in High Gravity Field" @default.
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- W2112593606 doi "https://doi.org/10.4028/www.scientific.net/kem.602-603.252" @default.
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