Электронный каталог

Статья

Alekseeva, L.S.
Radiation Resistance of Fine-Grained YAG:Nd Ceramics Irradiated with Swift Heavy Multi-Charged Ar and Xe Ions / L.S.Alekseeva, V.A.Skuratov, A.T.Issatov, [a.o.] // Ceramics International [Electronic resource]. – 2024. – Vol. 50, No. 24, Pt. C. – P. 55251-55262. – URL: https://doi.org/10.1016/j.ceramint.2024.10.378. – Bibliogr.: 51.

Submicron-grade Y&sub(2.5)Nd&sub(0.5)Al&sub(5)O&sub(12) 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 YAlO&sub(3) 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 × 10&sup(11) to 1 × 10&sup(13) cm&sup(−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 × 10&sup(13) cm&sup(−2), corresponding to 0.044 displacements per atom (dpa). The microhardness Hv of the surface layer decreased with increasing ion fluence.



Спец.(статьи,препринты) = С 349.1 - Действие излучения на материалы$
ОИЯИ = ОИЯИ (JINR)2024
Бюллетени = 4/025