Percolation in Radioactive-Waste Glass Melt with RuO2
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.
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Document Type: Research Article
Affiliations: Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
Publication date: 2010-09-01