Immobilization of the rare earth fraction in lanthanide phosphates LnPO4. Radiation and hydrolytic resistance of the matrix
| Autor: | Mikhaylov, D. A., Potanina, E. A., Orlova, V. A., Boldin, M. S., Murashov, A. A., Voronin, A. V., Nokhrin, A. V., Kordhenkin, K. K., Ryabkov, D. V., Orlova, A. I., Chuvildeev, V. N. |
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| Rok vydání: | 2021 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Radiation and hydrolytic resistance of Eu0.054Gd0.014Y0.05La0.111Ce0.2515Pr0.094Nd0.3665Sm0.059PO4 with monazite structure has been studied. The powders were obtained by deposition from solutions. Ceramic specimens with relative density ~97% were obtained by Spark Plasma Sintering (heating rate Vh = 50 {\deg}C/min, sintering temperature Ts = 1070 {\deg}C, sintering time ts = 18 min). Irradiation by accelerated electrons up to dose of 10^9 Ge was found not to result in a destruction of the target phase. After the irradiation, an increasing of the leaching rate by an order of magnitude (up to ~10^{-8} g/(cm2*day)) and a reduction of the mechanical properties by 32% as compared to the non-irradiated ceramic specimen were observed. Comment: 11 pages, 6 figures, one table |
| Databáze: | arXiv |
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