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Al 3 BC 3 was fabricated by in-situ reaction of Al, B 4 C and activated carbon additives, which improved both sinterability and mechanical properties of the ZrB 2 ceramics. The densification of ZrB 2 was nearly completed at 1700°C using spark plasma sintering (SPS). Both fracture toughness and flexural strength of ZrB 2 ceramics increased with the content...
Laminated SiC/ZrB 2 ceramic was fabricated by roll-compaction and spark plasma sintering at 1600°C. A maximum fracture toughness of 12.3±0.3MPam 1/2 was measured for the sintered SiC/ZrB 2 laminated ceramic. This significant improvement in fracture toughness can be attributed to the crack deflection along the interfacial layer and the presence of residual stresses in the sample...
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