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Anomalous dilatation-temperature curves of PZT-ZrO2 composites (1993)

Malič, B. ; Kosec, M. ; Kosmač, T.

Springer

Journal of materials science 28 (1993), S. 5179-5183

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ISSN: 1573-4803

Source: Springer Online Journal Archives 1860-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Notes: 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.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00570060

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