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Near net-shaped porous alumina with considerable mechanical strength was fabricated in the following processes. The green compact of the mixed powders of aluminum and alumina formed by slurry casting was dried and sintered in air. The change of the specimen size was expectedly very small because the expansion due to the oxdation of metal and the sintering shirinkage were evenly balanced.
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Imamura et al. (1993) studied this question.
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