Percolation in Radioactive-Waste Glass Melt with RuO2
Abstract:Molten glass containing ruthenium dioxide (RuO2) particles develops electronic conduction, which leads to an unstable operation of the Joule-heated melter for the radioactive waste vitrification. The percolation behavior of molten glass–RuO2 composites was examined by noting their hierarchical formation process. A low percolation threshold <1 vol% was reasonably reproduced by assuming the packing of “soft” RuO2 rods in the primary aggregate, and by applying Bruggeman's effective medium approximation for the higher aggregates and their clusters.
Document Type: Research Article
Affiliations: Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
Publication date: 2010-09-01