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Study of Li$$_{2}$$TiO$$_{3}$$ + 5 mol% TiO$$_{2}$$ lithium ceramics after long-term neutron irradiation

Chikhray, Y.*; Shestakov, V.*; Maksimkin, O.*; Turubarova, L.*; Osipov, I.*; Kulsartov, T.*; Kuykabayeba, A.*; Tazhibayeva, I.*; Kawamura, Hiroshi; Tsuchiya, Kunihiko 

The PIE (Post Irradiation Examinations) results of Li$$_{2}$$TiO$$_{3}$$ pebbles added with 5 mol% TiO$$_{2}$$ after the long-term irradiation tests are described in this paper. 96 at% $$^{6}$$Li-enriched Li$$_{2}$$TiO$$_{3}$$ 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.

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Category:Materials Science, Multidisciplinary

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