High-temperature oxidation and corrosion of structural materials in molten chlorides.

Journal Article · Thu Feb 01 04:00:00 EST 2001 · Oxid. Met.

DOI:https://doi.org/10.1023/A:1010333407304· OSTI ID:942612

Indacochea, J E; Smith, J L; Litko, K R; Karell, E J; Raraz, A G

A molten salt-based process for treatment of spent oxide fuels is under development at the Argonne National Laboratory. A major part of the development effort involves identification of corrosion-resistant structural materials for the process vessels. Coupons of two stainless steels, tantalum, and two Inconel alloys were submitted to a corrosion test in an argon atmosphere with 10% oxygen. The coupons were partially immersed in molten lithium chloride salt containing small amounts of lithium metal, lithium oxide, and lithium nitride. Two sets of coupons were tested, the first at 750{sup o}C for 30 days and the second at 650{sup o}C for 6 days. Coupons of the first set corroded completely. In the second set of coupons, all corroded to some extent, but Inconel 600 showed the best performance overall. The salt-exposed region generally showed the greatest corrosion in the other coupons. One of the 316L SS coupons was welded and the weld area was severely attacked.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 942612
• Report Number(s): ANL/CMT/JA-32980
• Journal Information: Oxid. Met., Journal Name: Oxid. Met. Journal Issue: 1-2 ; Feb. 2001 Vol. 55; ISSN OXMEAF; ISSN 0030-770X
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

36 MATERIALS SCIENCE
ANL
ARGON
ATMOSPHERES
BUILDING MATERIALS
CHLORIDES
CONTAINERS
CORROSION
FUELS
INCONEL 600
INCONEL ALLOYS
LITHIUM
LITHIUM CHLORIDES
LITHIUM NITRIDES
LITHIUM OXIDES
OXIDATION
OXIDES
OXYGEN
PERFORMANCE
SALTS
STAINLESS STEELS
TANTALUM
TEMPERATURE RANGE 0400-1000 K
WELDED JOINTS