Immobilization of Radioactive Wastes into Perovskite Synrock by the SHS Method
This paper researched the fabrication of perovskite synrock by self-propagating high temperature synthesis (SHS) and the characterization of the products. This synthesis process is simpler, the fabricated synrock can immobilize waste loading up to 35wt% SrO with satisfied physical properties (density>4.2g•cm-3, open porosity<0.2%, Leach rate<1.0 g•m-2•d-1). The structure analyses by XRD and SEM/EDS show that the major phase is perovskite which well agrees with the design. It proves that SHS offer a suitable Sr-waste synroc which is favorable for geological disposal.
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
R. Z. Zhang et al., "Immobilization of Radioactive Wastes into Perovskite Synrock by the SHS Method", Materials Science Forum, Vols. 475-479, pp. 1627-1630, 2005