Study of Resistance to Helium Swelling of Lithium-Containing Ceramics under High-Temperature Irradiation

The aim of this work was to study resistance helium accumulation processes in the structure surface layer lithium-containing ceramics and subsequent destruction embrittlement processes, depending on radiation fluence. objects were Li2TiO3-type obtained by thermal sintering. fluence dependency changes structural strength properties determined be range from 1018 1022 ion/m2, which corresponded concentration implanted 0.01% 0.8–1 at.%. Irradiation carried out at a temperature 700 °C, made it possible simulate damage that closest real conditions reactor core. During studies out, found that, irradiation fluences 1018–1020 formation point defects equaled process annealing defects, as result their effect change insignificant. An increase above 0.5 at.% led dominance over gas-filled cavities, negatively affects ceramics.