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EFFECTS OF PROCESSING PARAMETERS ON FABRICATION AND PROPERTIES OF A^O3 BASED POROUS CERAMICS
https://doi.org/10.17073/1683-4518-2014-12-43-50
Abstract
Al2O3 based porous ceramics (APCs) were successfully fabricated via a polymeric sponge replica method using fused white corundum powder as main raw material. The effects of zirconia content (0-12 wt. %), sintering temperature (1450-1550 °C) and holding time (2-6 h) on the phase composition, macrostructure, microstructure, sintering properties, cold crushing strength and thermal shock resistance of the APCs were investigated. The APCs with ultrafine microstructure could be obtained by doping ZrO2. The properties of the APCs were found to depend greatly on the processing parameters. The APCs with high porosity (88,9 %), high crushing strength (0,52 MPa) and good thermal shock resistance (19 numbers of thermal cycling) could be fabricated when the sample containing 8 wt. % ZrO2 was sintered at 1500 °C for 2 h. Ill. 14. Ref. 26. Tab. 1.
About the Authors
B. MaChina
Yi. Li
China
G. Liu
China
Zh. Li
China
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Supplementary files
For citation: Ma B., Li Y., Liu G., Li Z. EFFECTS OF PROCESSING PARAMETERS ON FABRICATION AND PROPERTIES OF A^O3 BASED POROUS CERAMICS. NOVYE OGNEUPORY (NEW REFRACTORIES). 2014;(12):43-50. https://doi.org/10.17073/1683-4518-2014-12-43-50
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