Abstract
Oxides such as CaO, ZnO, Fe20O3, and Zr0O2 were substituted for Si0O2 into a 14 Na20‐10 B20O3‐76 Si0O2 (wt%) glass in proportion to their weight percent in PNL‐7668 simulated nuclear waste glass. No correlation was found between the Na diffusion coefficient (DNa) in the bulk glass and sodium leaching in water for any of the iron‐containing borosilicate glasses. Effective diffusion coefficients calculated from the sodium leach rates in deionized water were 500 to 2000 times larger than DNa. The experimental leaching data agreed with a diffusion‐convection model where the convective term was a measured “phase‐boundary” velocity moving into the glass.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call