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Si3N4-ZrB2 ceramics were hot-pressed at 1500°C using self-synthesized fine ZrB2 powders containing 2.0wt% B2O3 together with MgO-Re2O3 (Re=Y, Yb) additives. Both Si3N4 and ZrB2 grains in the hot-pressed ceramics were featured with elongated and equiaxed morphology. The presence of elongated Si3N4 and ZrB2 grains led to the partial texture of the ceramics under the applied pressure. Vickers hardness...
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