Effects of Noble Metal Elements on Properties of Simulated Vitrified Products for High-Level Liquid Waste

; Kawamura, Kazuhiro; Takahashi, Takeshi

PNC TN8410 91-247, 29 Pages, 1991/12

PNC-TN8410-91-247.pdf:0.8MB

The effects of noble metal elements such as ruthenium, rhodium and palladium on the viscosity and electrical resistivity of simulated nuclear waste glass were studied. The glass enriched with noble metals showed the viscosity of a non-Newtonian fluid. The viscosity of the waste g1ass with 10 wt% RuO was 3 to 7 times higher than that of glass without noble metals. The RuO was mainly responsible for the increase in viscosity for the glass enriched with noble metals. Electrical resistivity of the glass with 15 wt% RuO, was one seventh to two orders of magnitude lower than that of glass without noble metals. The three noble metals contributed to the decrease in resistivity. The quantitative effects of noble metals on these properties were obtained.