Abstract
The dilatation-temperature curves of the PZT-ZrO2 composites, containing 1.3–13.2 vol% ZrO2 were studied. The course of martensitic transformation (MT) of dispersed ZrO2 particles in the PZT matrix was followed. Upon cooling, a spontaneous microcrack formation occurred during the MT from tetragonal to monoclinic crystal phase of ZrO2. The phenomenon of intensive shrinkage above 800 °C upon heating is explained as a process of microcrack healing in the presence of the PbO-rich liquid phase.
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Malič, B., Kosec, M. & Kosmač, T. Anomalous dilatation-temperature curves of PZT-ZrO2 composites. J Mater Sci 28, 5179–5183 (1993). https://doi.org/10.1007/BF00570060
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DOI: https://doi.org/10.1007/BF00570060