Abstract
Dense and homogeneous composites with matrices of either tetragonal zirconia polycrystals, or ZrO2-containing Al2O3, mullite or cordierite, and with SiC whiskers as reinforcement were fabricated by conventional P/M processing including hot-pressing. The toughness was increased in all cases with crack deflection being the main toughening mechanism. The room-temperature strength of tetragonal zirconia polycrystals was reduced due to the high thermal mismatch stresses with the SiC whiskers. However, the tetragonal (t) - to - monoclinic (m) transformation in ZrO2 can be utilized to adjust the thermal mismatch between SiC whiskers and those zirconia-containing ceramics which have large coefficients of thermal expansion.
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© 1986 Plenum Press, New York
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Claussen, N., Petzow, G. (1986). Whisker-Reinforced Zirconia-Toughened Ceramics. In: Tressler, R.E., Messing, G.L., Pantano, C.G., Newnham, R.E. (eds) Tailoring Multiphase and Composite Ceramics. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2233-7_51
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DOI: https://doi.org/10.1007/978-1-4613-2233-7_51
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