Abstract
Strength and fracture toughness of reaction-sintered mullite/zirconia composites (RSMZ) and reaction-sintered mullite/alumina/zirconia composites have been investigated as a function of temperature. Thermal shock resistance has also been determined. It was found that dispersion of zirconia particles and the particular microstructure of mullite obtained by means of anin situ reaction process leads to improved properties, with a room temperature fracture toughness of about 5.25 MPa m1/2. Up to 1000° C fracture strength and toughness values are quite high, which make these materials potential candidates for high temperature applications.
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Orange, G., Fantozzi, G., Cambier, F. et al. High temperature mechanical properties of reaction-sintered mullite/zirconia and mullite/alumina/zirconia composites. J Mater Sci 20, 2533–2540 (1985). https://doi.org/10.1007/BF00556085
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DOI: https://doi.org/10.1007/BF00556085