Abstract
Gelcasting has been developed as a novel ceramic forming method for complex-shaped advanced materials of near-net-shape. In this work, the gelcasting process has been further developed to fabricate porous single- and multi-component ceramics. Porous multi-component ceramics were obtained from gelcast body of precursors by a reaction-sintering process. Large α-Al 2O 3 powders with a d 50 value of 21.12 μm and mixed precursors were used to prepare porous α-Al 2O 3 and La 0.6Sr 0.4Co 0.8Fe 0.2O 3− δ ceramics, respectively. The experimental results presented here demonstrate the utility of the gelcasting process for fabricating practically useful porous ceramics.
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