Characterization of the ceramics prepared from the spray freeze dried granule

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Abstract

Spray freeze drying (SFD) method was developed to fabricate ceramic powder granules with high homogeneity for high performance ceramics. In this study we prepared high density granules from high solid loading slurry through the SFD technique. Granules obtained through SFD were characterized with SEM, immersion liquid technique and powder tester. The ceramics prepared from the spray freeze dried granules (SL 40vol%) had the mean strength of 510MPa and the Weibull modulus m=17.5.