skip to main content

DOE PAGESDOE PAGES

Title: Glass binder development for a glass-bonded sodalite ceramic waste form

This paper discusses work to develop Na 2O-B 2O 3-SiO 2 glass binders for immobilizing LiCl-KCl eutectic salt waste in a glass-bonded sodalite waste form following electrochemical reprocessing of used metallic nuclear fuel. In this paper, five new glasses with ~20 mass% Na 2O were designed to generate waste forms with high sodalite. The glasses were then used to produce ceramic waste forms with a surrogate salt waste. The waste forms made using these new glasses were formulated to generate more sodalite than those made with previous baseline glasses for this type of waste. The coefficients of thermal expansion for the glass phase in the glass-bonded sodalite waste forms made with the new binder glasses were closer to the sodalite phase in the critical temperature region near and below the glass transition temperature than previous binder glasses used. Finally, these improvements should result in lower probability of cracking in the full-scale monolithic ceramic waste form, leading to better long-term chemical durability.
Authors:
; ; ORCiD logo ; ; ; ; ORCiD logo ; ; ORCiD logo ; ;
Publication Date:
Report Number(s):
PNNL-SA-123338
Journal ID: ISSN 0022-3115; PII: S0022311517301563; TRN: US1700521
Grant/Contract Number:
AC05-76RL01830; 48708
Type:
Accepted Manuscript
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 489; Journal Issue: C; Journal ID: ISSN 0022-3115
Publisher:
Elsevier
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23); USDOE Office of Nuclear Energy (NE), Nuclear Reactor Technologies (NE-7)
Contributing Orgs:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
OSTI Identifier:
1349076
Alternate Identifier(s):
OSTI ID: 1419553