Radiation Resistance and Hydrolytic Stability of Y0.95Gd0.05PO4-Based Ceramics with the Xenotime Structure
| Autor: | Maksim Boldin, N. S. Kirilkin, Vladimir A. Skuratov, A. I. Orlova, E. A. Potanina, D. A. Mikhailov, O. A. Belkin, N. V. Sakharov, A. V. Nokhrin, V. N. Chuvil’deev |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Inorganic Materials. 57:760-765 |
| ISSN: | 1608-3172 0020-1685 |
| DOI: | 10.1134/s0020168521070128 |
| Popis: | The Y0.95Gd0.05PO4 phosphate with the xenotime structure has been synthesized in powder form and as ceramics. Ceramics with a relative density of ~99% have been produced by spark plasma sintering. The sintering temperature was 1140°C and the sintering time was ~18 min, without isothermal holding. We have assessed the radiation resistance of the ceramics under irradiation with 132Xe26+ ions and investigated the restoration of the obtained metamict phase to a crystalline one via high-temperature heat treatment. No complete amorphization of the samples has been reached at the fluences used in this study. The calculated critical fluence is (9.2 ± 0.1) × 1014 cm–2, and the calculated latent track radius is ~2.8 nm. Hydrolytic tests have shown that the phosphate under study is stable in water under dynamic conditions. The observed Y and Gd leaching rates were Ri = 1.68 × 10–6 and 1.5 × 10–7 g/(cm2 day), respectively. |
| Databáze: | OpenAIRE |
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