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Porous alumina ceramics with ultra-high porosity were prepared through combining the gel-casting process with the pore-forming agent technique. Porosity and pore size distribution of the sintered bulks were evaluated with and without adding starch, respectively. In particular, the influences of starch addition on the properties, including thermal conductivity and compressive strength were studied...
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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