Release kinetics of tritium generation in neutron irradiated biphasic Li2TiO3–Li4SiO4 ceramic breeder

Study of Corrosion Resistance and Degradation Mechanisms in LiTiO2-Li2TiO3 Ceramic

“…Thus, summarizing all of the above, we can conclude that the formation of twophase LiTiO 2 -Li 2 TiO 3 ceramics with a cubic phase content of no more than 10-20% can significantly increase both the strength properties of ceramics and increase the resistance to degradation and corrosion, as well as reduce the oxidation and destruction rate of ceramics. The results obtained are also in good agreement with other works [9][10][11][12][13][14] devoted to studying the effect of two phases on the stability of lithium-containing ceramics and increasing the efficiency of their productivity.…”

“…As is known, corrosion processes, which are accompanied by the introduction of oxygen with the subsequent formation of amorphous inclusions or areas of disorder, can lead to significant consequences in the 2 of 12 performance of materials. Thus, for example, in works [11,12] devoted to the study of the processes of tritium release from their Li 2 TiO 3 -Li 4 SiO 4 ceramic, it was found that structural defects that accumulate in the material under the action of irradiation make a significant contribution to the production of lithium. The presence of structural defects can lead to the formation of a large number of disordering regions, as well as to a significant increase in the porosity of ceramics, which leads to their degradation and, consequently, to a decrease in the yield of tritium [11][12][13][14][15].…”

“…Thus, for example, in works [11,12] devoted to the study of the processes of tritium release from their Li 2 TiO 3 -Li 4 SiO 4 ceramic, it was found that structural defects that accumulate in the material under the action of irradiation make a significant contribution to the production of lithium. The presence of structural defects can lead to the formation of a large number of disordering regions, as well as to a significant increase in the porosity of ceramics, which leads to their degradation and, consequently, to a decrease in the yield of tritium [11][12][13][14][15]. At the same time, data on degradation resistance of lithium-containing ceramics under the action of ionizing radiation indicates a high radiation resistance of ceramics [16][17][18][19][20]; however, such data on corrosion resistance in aggressive media, such as acids or alkalis, are insufficient.…”

Mass fabrication of Li2TiO3–Li4SiO4 ceramic pebbles with high strength by facile centrifugal granulation method

“…The lithium content and the tritium release of Li 4 SiO 4 are better than that of Li 2 TiO 3 , but the mechanical properties of Li 2 TiO 3 are higher than that of Li 4 SiO 4 . Thus, integrating the respective advantages of Li 4 SiO 4 and Li 2 TiO 3 will be a key research object for improving the comprehensive properties of ceramics breeder 16‐18 . It was also found from the previous literature that the two phases of Li 4 SiO 4 and Li 2 TiO 3 can also exist independently at high temperatures 19 .…”

“…Thus, integrating the respective advantages of Li 4 SiO 4 and Li 2 TiO 3 will be a key research object for improving the comprehensive properties of ceramics breeder. [16][17][18] It was also found from the pre-vious literature that the two phases of Li 4 SiO 4 and Li 2 TiO 3 can also exist independently at high temperatures. 19 Therefore, we can gain enlightenment from the above work that the biphasic lithium-contained ceramics will become a new generation of advanced tritium breeder material owing to its prominent advantages.…”