Study of the effect of doping ZrO2 ceramics with MgO to increase the resistance to polymorphic transformations under the action of irradiation
Kurakhmedov A.E. Alin M. Temir A.M. Ivanov I.A. Bikhert Y.V. Ungarbayev Y.O. Zdorovets M.V. Kozlovskiy A.L.
December 2021MDPI
Nanomaterials
2021#11Issue 12
The purpose of this study is to assess the effect of doping ZrO2 ceramics with MgO on radiation swelling and polymorphic transformations, as a result of irradiation with heavy ions. Interest in these types of materials is due to the great prospects for their use as structural materials for new-generation reactors. The study established the dependences of the phase composition formation and changes in the structural parameters following a change in the concentration of MgO. It has been established that the main mechanism for changing the structural properties of ceramics is the displacement of the cubic c-ZrO2 phase by the Zr0.9Mg0.1O2 substitution phase, which leads to an increase in the stability of ceramic properties to irradiation. It has been deter-mined that an increase in MgO concentration leads to the formation of an impurity phase Zr0.9Mg0.1O2 due to the type of substitution, resulting in changes to the structural parameters of ceramics. During studies of changes in the strength properties of irradiated ceramics, it was found that the formation of a phase in the Zr0.9Mg0.1O2 structure leads to an increase in the resistance to cracking and embrittlement of the surface layers of ceramics.
Polymorphic transformations , Radiation defects , Radiation resistance , Swift heavy ion , ZrO2 ceramic
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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, Nur-Sultan, 010008, Kazakhstan
Department of Intelligent Information Technologies, Ural Federal University, Yekaterinburg, 620075, Russian Federation
Institute of Geology and Oil and Gas Business, Satbayev University, Almaty, 050032, Kazakhstan
Laboratory of Solid State Physics
Engineering Profile Laboratory
Department of Intelligent Information Technologies
Institute of Geology and Oil and Gas Business
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