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-co
mponent ceramics. Porous multi-component ceramics were obtained from gelcas
t body of precursors by a reaction-sintering process. Large alpha-Al2O3 pow
ders with a d(50) value of 21.12 mu m and mixed precursors were used to pre
pare porous alpha-Al2O3 and La0.6Sr0.4Co0.8Fe0.2O3-delta ceramics, respecti
vely. The experimental results presented here demonstrate the utility of th
e gelcasting process for fabricating practically useful porous ceramics. (C
) 2000 Elsevier Science B.V. All rights reserved.