Corrosion behavior of silicon nitride, magnesium oxide, and several metals in molten calcium chloride with chlorine

Journal Article · Sat Aug 01 04:00:00 EDT 1992 · Nuclear Technology; (United States)

OSTI ID:7279836

McLaughlin, D ^[1]; Sesions, C E; Marra, J E ^[2]

---

1. Westinghouse Electric Corp., Pittsburgh, PA (United States). Research and Development Center
2. Westinghouse Savannah River Co., Aiken, SC (United States)

In this paper corrosion studies are described in a molten calcium chloride environment sparged with chlorine gas at 850{degrees}C, both in the melt and in the gas phase above the salt, in support of efforts at Westinghouse Savannah River Company to develop more resistant materials of construction for molten salt processing of plutonium. Corrosion rates and electron microscope analyses are reported for Inconel alloys 601 and 617, tantalum, tungsten, magnesium oxide, and silicon nitride. Silicon nitride exhibited the greatest resistance, showing {lt}0.1 mg/cm{sup 2} {center dot} h loss in both melt and vapor None of the metallic coupons withstood the chlorine vapor environment, although Inconel indicated resistance immersed in the melt if protected from chlorine gas.

• OSTI ID: 7279836
• Journal Information: Nuclear Technology; (United States), Journal Name: Nuclear Technology; (United States) Vol. 99:2; ISSN 0029-5450; ISSN NUTYB
• Country of Publication: United States
• Language: English

Related Subjects

050800 -- Nuclear Fuels-- Spent Fuels Reprocessing
053004 -- Nuclear Fuels-- Environmental Aspects-- Design Basis & Hypothetical Accidents-- (1992-)
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
36 MATERIALS SCIENCE
360205* -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
ACTINIDES
ALKALINE EARTH METAL COMPOUNDS
ALLOY-NI54CR22CO13MO9
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
CALCIUM CHLORIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CHALCOGENIDES
CHLORIDES
CHLORINE
CHLORINE COMPOUNDS
CHROMIUM ALLOYS
COBALT ALLOYS
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
ELEMENTS
ENVIRONMENTAL EFFECTS
FUEL REPROCESSING PLANTS
HALIDES
HALOGEN COMPOUNDS
HALOGENS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCONEL 617
INCONEL ALLOYS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MATERIALS
MATERIALS TESTING
METALS
MOLTEN SALTS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NITRIDES
NITROGEN COMPOUNDS
NONMETALS
NUCLEAR FACILITIES
OXIDES
OXYGEN COMPOUNDS
PLUTONIUM
PNICTIDES
SALTS
SILICON COMPOUNDS
SILICON NITRIDES
TANTALUM ALLOYS
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
TESTING
TRANSURANIUM ELEMENTS
TUNGSTEN ALLOYS