Homogeneity of peraluminous SiO2–B2O3–Al2O3–Na2O–CaO–Nd2O3 glasses: Effect of neodymium content

Abstract Considering the interest of developing new glass matrices able to immobilize higher concentration of high level nuclear wastes than currently used nuclear borosilicate compositions, glasses containing high rare earth contents are of particular interest. This study focuses on a peraluminous aluminoborosilicate system SiO2–B2O3–Al2O3–Na2O–CaO–Nd2O3 defined by a peralkaline/peraluminous ratio RP = ([Na2O] + [CaO])/([Na2O] + [CaO] + [Al2O3])