Radiation resistance of fine-grained YAG:Nd ceramics irradiated with swift heavy multi-charged Ar and Xe ions
Alekseeva L.S. Nokhrin A.V. Yunin P.A. Nazarov A.A. Orlova A.I. Skuratov V.A. Issatov A.T. Kovylin R.S. Murashov A.A. Boldin M.S. Voronin A.V. Chuvildeev V.N. Zotov D.A.
15 December 2024Elsevier Ltd
Ceramics International
2024#50Issue 2455251 - 55262 pp.
Submicron-grade Y2.5Nd0.5Al5O12 oxide (YAG:Nd) powder with garnet structure was synthesised by the co-precipitation method. YAG:Nd ceramics with a relative density of ∼99 % were obtained by Spark Plasma Sintering. The ceramics had a fine-grained microstructure and low YAlO3 impurity phase content. The radiation resistance of the ceramics was investigated with irradiation with accelerated Xe ions (E = 148 MeV) and Ar ions (E = 46 MeV), with the fluences ranging from 6 × 1011 to 1 × 1013 cm−2. The phase composition, microstructure and microhardness of the irradiated ceramics were studied. X-ray diffraction (XRD) analysis in the symmetric mode and grazing incidence XRD were used to study the irradiated layer structure. A gradient-defect structure was shown to be formed in the YAG:Nd ceramics under irradiation: amorphous phase, deformed garnet phase and non-deformed garnet phase. The dependencies of the volume fraction of the amorphous phase and of the amorphisation structure on the fluence were analysed. The calculated value of the critical fluence was 1 × 1013 cm−2, corresponding to 0.044 displacements per atom (dpa). The microhardness Hv of the surface layer decreased with increasing ion fluence.
Ceramics , Garnet , Radiation resistance , Spark plasma sintering
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Lobachevsky University, Nizhny Novgorod, 603022, Russian Federation
Institute for Physics of Microstructures of the Russian Academy of Science, Nizhny Novgorod, 603950, Russian Federation
Joint Institute for Nuclear Research, Dubna, 141980, Russian Federation
Gumilyov Eurasian National University, Nur-Sultan, 010000, Kazakhstan
The Institute of Nuclear Physics, Almaty, 050032, Kazakhstan
G.A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Science, Nizhny Novgorod, 603950, Russian Federation
National Research Nuclear University MEPhI, Moscow, 115409, Russian Federation
Dubna State University, Dubna, 141982, Russian Federation
Lobachevsky University
Institute for Physics of Microstructures of the Russian Academy of Science
Joint Institute for Nuclear Research
Gumilyov Eurasian National University
The Institute of Nuclear Physics
G.A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Science
National Research Nuclear University MEPhI
Dubna State University
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