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Mechanical properties of cubic zirconia irradiated with swift heavy ions

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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http://hal.in2p3.fr/in2p3-00357527
Contributor : Michel Lion <>
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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