Corrosion behavior of sodium-exposed stainless steels in chloride-containing aqueous solutions
The corrosion behavior of sodium-exposed stainless steels in chloride-containing aqueous solutions was investigated. Results showed that sodium-corroded Type 316 stainless steel (prototypic Liquid Metal Fast Breeder Reactor (LMFBR) fuel cladding) maintains its integrity after five months exposure in these solutions at 82/sup 0/C and with chloride content up to 500 ppM. In contrast, sensitized and sodium mass transfer deposit-containing Type 304 stainless steel failed in the high chloride solution (500 ppM) within ten days at the same temperature. The failure was initiated by pitting and subsequently accelerated by intergranular attack. The results also show that high pH tends to reduce the susceptibility to failure while procedures commonly used for sodium removal have no significant effect on the water corrosion behavior of the test material. Based on the current results, it is concluded that water shortage is feasible for spent fuels in a LMFBR reprocessing plant.
- Research Organization:
- Westinghouse Advanced Reactors Division, Madison, PA
- OSTI ID:
- 6216201
- Journal Information:
- Metall. Trans., A; (United States), Vol. 10:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
CHLORIDES
CORROSIVE EFFECTS
SODIUM
STAINLESS STEEL-304
CORROSION
STAINLESS STEEL-316
ALCOHOLS
ARGON
FAILURES
FUEL CANS
LMFBR TYPE REACTORS
MICROSTRUCTURE
REMOVAL
STEAM
STORAGE
SURFACES
WATER
ALKALI METALS
ALLOYS
BREEDER REACTORS
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
ELEMENTS
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
HALIDES
HALOGEN COMPOUNDS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
LIQUID METAL COOLED REACTORS
MATERIALS
METALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NONMETALS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
RARE GASES
REACTORS
STAINLESS STEELS
STEELS
360105* - Metals & Alloys- Corrosion & Erosion
210500 - Power Reactors
Breeding