Synthèse, caractérisation et étude du comportement sous irradiation électronique de matrices de type hollandite destinées au confinement du césium radioactif

Research on treating specifically the long-lived and high level nuclear wastes, notably cesium, is currently carried out in France. Cesium immobilization in host matrices of high chemical durability constitutes the favoured option. Hollandite matrix is a good candidate because of its high cesium incorporation ability and its excellent chemical stability. During this study, different compositions of hollandite ceramics BaxCsyCzTi8-zO16 (C=Al3+, Cr3+, Ga3+, Fe3+, Mg2+, Sc3+), synthesized by oxide route, were characterized in terms of structure, microstructure and physical and chemical properties... Mehr ...