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Mechanical properties of cubic zirconia irradiated with swift heavy ions

V. Menvie Bekale 1 G. Sattonnay 1 C. Legros 1 A.M. Huntz 1 S. Poissonnet 2 L. Thomé 3
1 LEMHE - Laboratoire d'étude des matériaux hors équilibre
2 SRMP - Service de recherches de métallurgie physique
3 CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
Abstract : The modifications of the mechanical properties of cubic (yttria-stabilized) zirconia induced by swift heavy ion irradiation are investigated. Polycrystalline pellets were irradiated at room temperature with 940 MeV Pb ions at the GANIL accelerator in Caen at fluences ranging from 5 1011 to 4 1013 cm 2. The microhardness and the fracture toughness of irradiated YSZ were studied by Vickers micro-indentation. Although YSZ is damaged by irradiation, an increase of the microhardness and fracture toughness with increasing ion fluence is observed. A strengthening of YSZ, associated with residual compressive stresses induced in the surface layer by irradiation, explain these results.
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Submitted on : Friday, January 30, 2009 - 3:49:33 PM
Last modification on : Wednesday, September 16, 2020 - 4:54:14 PM

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V. Menvie Bekale, G. Sattonnay, C. Legros, A.M. Huntz, S. Poissonnet, et al.. Mechanical properties of cubic zirconia irradiated with swift heavy ions. Journal of Nuclear Materials, Elsevier, 2009, 384, pp.70-76. ⟨10.1016/j.jnucmat.2008.10.007⟩. ⟨in2p3-00357527⟩

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