Abstract
Al2O3/SiC whisker/ZrO2 composites were fabricated by hot-pressing to full density. Significant toughening and strengthening were achieved in Al2O3/25 vol.% SiC whisker /15 vol.% ZrO2. The whisker bridging /pullout mechanism rather than crack deflection was believed responsible for whisker toughening in the composites studied. Multiplicative and interactive effects between whiskers and transformation toughening are discussed.
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