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- Title
A new material in the nuclear technology: gadolinium zirconate pyrochlore prepared by reactive sintering.
- Authors
Brykała, Urszula; Tomaszewski, Henryk; Diduszko, Ryszard; Węglarz, Helena; Sidorowicz, Agata; Wajler, Anna; Jach, Katarzyna; Jagielski, Jacek
- Abstract
The ability of gadolinium zirconate pyrochlore for actinides incorporation in its lattice makes this material a possible matrix for the immobilization of nuclear wastes. The aim of the presented work was to develop a novel method of gadolinium zirconate synthesis by using a reactive sintering procedure under high pressure based on commercial ZrO and GdO nanopowders. Samples were analyzed using X-ray diffraction and SEM to check their phase composition and microstructure. The obtained sintered pellets demonstrated peaks characteristic for pyrochlore structure for a wide range of preparation temperatures and high density (99.5 % of the theoretical value). It was found that the resulting materials exhibited a homogeneous microstructure and the average grain size dependent on sintering temperature.
- Subjects
GADOLINIUM zirconate; PYROCHLORE; RARE earth metal compound synthesis; NUCLEAR reactions; SINTERING; RADIOACTIVE wastes; X-ray diffraction
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2014, Vol 299, Issue 1, p637
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-013-2803-5