Abstract:
The article considers the effect of doping with magnesium oxide (MgO) on changes in
the properties of lithium-containing ceramics based on lithium metazirconate (Li2ZrO3
). There is
interest in this type of ceramics on account of their prospects for application in tritium production
in thermonuclear power engineering, as well as several other applications related to alternative
energy sources. During the investigations undertaken, it was found that variation in the MgO dopant
concentration above 0.10–0.15 mol resulted in the formation of impurity inclusions in the ceramic
structure in the form of a MgLi2ZrO4 phase, the presence of which resulted in a rise in the density of
the ceramics, along with elevation in resistance to external influences. Moreover, during experimental
work on the study of the thermal stability of the ceramics to external influences, it was found that the
formation of two-phase ceramics resulted in growth in the preservation of stable strength properties
during high-temperature cyclic tests. The decrease in strength characteristics was observed to be less
than 1%.
