Lead-iron phosphate glass: a stable storage medium for high-level nuclear waste
Results are presented which show that lead-iron phosphate glasses are a promising new waste form for the safe immobilization of both high-level defense and high-level commercial radioactive waste. Relative to the borosilicate nuclear waste glasses that are currently the ''reference'' waste form for the long-term disposal of nuclear waste, lead-iron phosphate glasses have several distinct advantages: (1) an aqueous corrosion rate that is about 1000 times lower, (2) a processing temperature that is 100/sup 0/ to 250/sup 0/C lower and, (3) a much lower melt viscosity in the temperature range from 800/sup 0/ to 1000/sup 0/C. Most significantly, the lead-iron phosphate waste form can be processed using a technology similar to that developed for borosilicate nuclear waste glasses.
- Research Organization:
- Oak Ridge National Lab., TN
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6224325
- Journal Information:
- Science (Washington, D.C.); (United States), Vol. 226
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
HIGH-LEVEL RADIOACTIVE WASTES
RADIOACTIVE WASTE DISPOSAL
PHOSPHATE GLASS
CHEMICAL COMPOSITION
MECHANICAL PROPERTIES
CORROSION RESISTANCE
IRON
LEAD
MELTING
PHOSPHATES
WASTE FORMS
ELEMENTS
GLASS
MANAGEMENT
MATERIALS
METALS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHOSPHORUS COMPOUNDS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
TRANSITION ELEMENTS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
052002* - Nuclear Fuels- Waste Disposal & Storage
360603 - Materials- Properties