Study of the Surface-Layer Softening Effects in xLi2ZrO3–(1−x)Li4SiO4 Ceramics under Irradiation with He2+ Ions


Shlimas D.I. Borgekov D.B. Kadyrzhanov K.K. Kozlovskiy A.L. Zdorovets M.V.
June 2024Multidisciplinary Digital Publishing Institute (MDPI)

Ceramics
2024#7Issue 2547 - 561 pp.

The study investigates alterations in the mechanical and thermophysical properties of ceramics composed of xLi2ZrO3–(1−x)Li4SiO4 as radiation damage accumulates, mainly linked to helium agglomeration in the surface layer. This research is motivated by the potential to develop lithium-containing ceramics characterized by exceptional strength properties and a resistance to the accumulation of radiation damage and ensuing deformation distortions in the near-surface layer. The study of the radiation damage accumulation processes in the near-surface layer was conducted through intense irradiation of ceramics using He2+ ions at a temperature of 700 °C, simulating conditions closely resembling operation conditions. Following this, a correlation between the accumulation of structural modifications (value of atomic displacements) and variations in strength and thermophysical characteristics was established. During the research, it was observed that two-component ceramics exhibit significantly greater resistance to external influences and damage accumulation related to radiation exposure compared to their single-component counterparts. Furthermore, the composition that provides the highest resistance to softening in two-component ceramics is an equal ratio of the components of 0.5Li2ZrO3–0.5Li4SiO4 ceramics.

helium swelling , lithium-containing ceramics , radiation defects , swelling resistance , two-phase ceramics

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Laboratory of Solid State Physics, The Institute of Nuclear Physics, Almaty, 050032, Kazakhstan
Engineering Profile Laboratory, L.N. Gumilyov, Eurasian National University, Astana, 010008, Kazakhstan
Department of General Physics, Satbayev University, Almaty, 050032, Kazakhstan

Laboratory of Solid State Physics
Engineering Profile Laboratory
Department of General Physics

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