Chemistry of Nepheline in High-Level Nuclear Waste Glasses
EMSL Project ID
48241
Abstract
Nepheline is a troublesome phase that crystallizes in high-level nuclear waste glass canisters during slow cooling. Nepheline removes network formers from the glass phase. In some cases, enough to render the remaining glass phase non-durable. To avoid fabrication of non-durable glass it is important to accurately model the fraction and chemistry of nepheline in the canister as a function of melt composition. This work is aimed to accurately determine the chemical composition of nepheline and how it varies as a function of melt composition. Electron microprobe and nano-SIMS are excellent micro-analysis tools to quantitatively measure the chemistry of nepheline (Li, B, O, Na, Mg, Al, Si, K, Ca, and Fe) and the resulting glass phase.
Project Details
Start Date
2014-01-06
End Date
2014-09-30
Status
Closed
Released Data Link
Team
Principal Investigator