Synthesis of open-cell particle-stabilized Al2O3 foam using Al(OH)3 particles

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In this article, we present the first report which details the preparation of open-cell Al 2 O 3 foam using Al(OH) 3 in conjunction with a particle-stabilized direct-foaming technique. Foam specimens were sintered at 1600 and 1700 °C for the decomposition of Al(OH) 3 into α-Al 2 O 3 , thus creating an open-pore structure with an average cell size of 95 or 65 μm, depending on the sintering temperature. The porosity of the foam was 83.4% and 58.8% when sintered at 1600 and 1700 °C, respectively.