Journal
MATERIALS LETTERS
Volume 45, Issue 3-4, Pages 224-227Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0167-577X(00)00109-9
Keywords
gelcasting; porous ceramics; alpha-Al2O3; perovskite; La0.6Sr0.4Co0.8Fe0.2O3-delta
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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 alpha-Al2O3 powders with a d(50) value of 21.12 mu m and mixed precursors were used to prepare porous alpha-Al2O3 and La0.6Sr0.4Co0.8Fe0.2O3-delta ceramics, respectively. The experimental results presented here demonstrate the utility of the gelcasting process for fabricating practically useful porous ceramics. (C) 2000 Elsevier Science B.V. All rights reserved.
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