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In this work, Al2O3-ZrO2(Y2O3) nanocomposites were prepared by hot pressing of nanocrystalline and amorphous powders; effects of starting powders on densification and microstructure were investigated. To obtain nanocomposites with relative densities of higher than 98%, the minimum hot pressing temperature for nanocrystal powders was 1200°C, and the resulting grain sizes were about 200nm; for amorphous...
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