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Porous ceramics were made by means of sintering the compacts manufactured by slurry casted mixtures of the powders of metal and ceramics in the atmospheres of various gases. According to this method, some near-net shaped porous ceramics were acquried owing to the balance of the size change between the expansion in the reaction process of the metal powders and the atomosphere gas and the shirinkage in the sintering process. Some conceptional descriptions about this methode are made in this paper.
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Imamura et al. (1993) studied this question.
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