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Effect of in-situ-formed TaB2 additives on ZrB2 powders synthesized by borothermal reduction of ZrO2 with boron together with a small amount of Ta2O5, and their densification were studied. Without TaB2 additives, coarse ZrB2 powders were prepared. However, fine ZrB2 powders with submicrometric size were synthesized by the solid solution of TaB2 (≥ 1mol%). The use of fine ZrB2 powders synthesized by...
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