SrAl2Si2O8 ceramic matrices for 90Sr immobilization obtained via spark plasma sintering-reactive synthesis
| Autor: | A.P. Zavjalov, E. K. Papynov, V. I. Sergienko, Oleg O. Shichalin, Ivan G. Tananaev, Yu. А. Parotkina, A. V. Golub, A.A. Belov, S. A. Azon, A.V. Gerasimenko, I. Yu. Buravlev |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Reactive synthesis 020209 energy Spark plasma sintering chemistry.chemical_element 02 engineering and technology Sr-feldspar Radionuclides immobilization 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Phase (matter) 0202 electrical engineering electronic engineering information engineering Relative density Ceramic Strontium Ceramic matrices SPS-RS TK9001-9401 Plasma Compressive strength Nuclear Energy and Engineering Chemical engineering chemistry visual_art visual_art.visual_art_medium Nuclear engineering. Atomic power |
| Zdroj: | Nuclear Engineering and Technology, Vol 53, Iss 7, Pp 2289-2294 (2021) |
| ISSN: | 1738-5733 |
| Popis: | In the present study, an original spark plasma sintering-reactive synthesis (SPS-RS) method for mineral-like ceramic materials based on SrAl2Si2O8 feldspar-like skeleton structure was used for the first time, promising solid-state matrices for reliable immobilization of high-energy 90Sr. The method is based on the “in-situ” reaction of a mixture of SrO, Al2O3 and SiO2 oxides when heated by a unipolar pulsed current under compacting pressure. The phase and elemental composition structure were studied. The dynamics of the consolidation of the reaction mixture of oxides was studied in the range of 900–1200 °C. The study found the temperature of the high-speed (minutes) SPS-RS formation of single-phase SrAl2Si2O8 composition ceramic in the absence of intermediate reaction products with a relative density of up to 99.2% and compressive strength up to 145 MPa and a strontium leaching rate of 10−4g/cm2·day. |
| Databáze: | OpenAIRE |
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