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Synthesis and Characterization of Co-Cs-Nd-Sr-Doped Perovskite-Rutile-Type Structure

Smolinski T., Zhao L., Rogowski M., Wawszczak D., Olczak T., Brykala M.

Archives of Metallurgy and Materials

2020

Vol. 65, iss. 4

1417--1423

The perovskite type matrix is considered as solidification material for high-level radioactive waste. In this work the perovskite-rutile-type matrix doped by Co, Cs, Nd and Sr which simulate nuclear waste was prepared by sol-gel route. The material was characterized by several methods such as: X-ray diffraction, energy dispersive X-ray spectrometer, and particle induced X-ray emission combined with Rutherford backscattering spectrometry. The analyzes confirmed chemical composition Co-Cs-Nd-Sr-doped perovskite-rutile-type structure. A virtual model of the pellet`s structure was created non-destructively by Roentgen computed micro-tomography. The leaching tests confirmed high chemical resistance of the matrix.