Corrosion behaviors of a glass-bonded sodalite ceramic waste form and its constituents

Conference · Wed Sep 15 04:00:00 EDT 1999

OSTI ID:23142135

Lewis, Michele A.; Ebert, William L.; Stanley, Mary L. ^[1]

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1. Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 (United States)

A ceramic waste form (CWF) of glass bonded sodalite is being developed as a waste form for the long-term immobilization of fission products and transuranic elements from the U.S. Department of Energy's activities on spent nuclear fuel conditioning. A durable waste form was prepared by hot isostatic pressing (HIP) a mixture of salt-loaded zeolite powders and glass frit. During HIP the zeolite is converted to sodalite, and the resultant CWF is been completed for durations of up to 182 days. Four dissolution modes were identified: dissolution of free salt, dissolution of the aluminosilicate matrix of sodalite and the accompanying dissolution of occluded salt, dissolution of the boro-aluminosilicate matrix of the glass, and ion exchange. Synergies inherent to the CWF were identified by comparing the results of the tests with pure glass and sodalite with those of the composite CWF.

• Research Organization: American Nuclear Society - ANS, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
• OSTI ID: 23142135
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
CERAMICS
CORROSION
DISSOLUTION
FISSION PRODUCTS
GLASS
HOT PRESSING
ION EXCHANGE
MATRICES
POWDERS
SPENT FUELS
WASTE FORMS
ZEOLITES