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Chikhray, Y.*; Shestakov, V.*; Maksimkin, O.*; Turubarova, L.*; Osipov, I.*; Kulsartov, T.*; Kuykabayeba, A.*; Tazhibayeva, I.*; Kawamura, Hiroshi; Tsuchiya, Kunihiko
Journal of Nuclear Materials, 386?388, p.286 - 289, 2009/04
Times Cited Count:21 Percentile:77.63(Materials Science, Multidisciplinary)The PIE (Post Irradiation Examinations) results of LiTiO pebbles added with 5 mol% TiO after the long-term irradiation tests are described in this paper. 96 at% Li-enriched LiTiO pebbles were prepared as the irradiation specimens and these specimens were irradiated during 223 days at the reactor power of 6 MWt in the WWR-K of NNC-RK. After neutron irradiation, light-colored pebbles became gray-colored due to structure changes which generation of gray-colored inclusions with low density and microhardness. Crystal structure of the pebbles after the irradiation test were changed from the results of X-ray diffraction measurement. The value of maximum permissible load (pebble crash limit) at that was also low. The residual tritium in the pebbles was measured after the irradiation test.