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Relationship of Optical Properties and Elastoplastic Characteristics of Transparent Spark-Plasma-Sintered YSZ Ceramics

O. L. Khasanov, E. S. Dvilis, Z. G. Bikbaeva, V. D. Paygin, A. O. Khasanov

Journal of Ceramic Science and Technology, Vol. 8, No. 1 (2017), pp. 161-168

DOI: 10.4416/JCST2016-00105

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Abstract

Transparent yttria-stabilized zirconia (YSZ) ceramics were sintered with the SPS method in different conditions. The optical and corresponding mechanical properties of the sintered samples were studied. A parameter for optimizing SPS processing has been suggested which characterizes optical transparency versus sample thickness. The dynamic evolution of the swelling areas over time after local indentation of transparent YSZ ceramics was shown. The appearance of spalls from the swelling areas depends on the degree of internal mechanical stresses in the given region of the sample and is explained by the relaxation of stresses accumulated on deformation during static indentation.

Keywords

YSZ, transparent ceramics, optical properties, mechanical properties, indentation, swelling, spalls, stress relaxation dynamics

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