ZIRCALOY-4 CORROSION IN HALIDE SOLUTIONS AND AT CREVICES IN HIGH- TEMPERATURE WATER

Technical Report · Mon Mar 19 04:00:00 EST 1962

DOI:https://doi.org/10.2172/4792968· OSTI ID:4792968

Berry, W E; White, E L; Fink, F W

Localized corrosion was observed in 0 to 0.004-in, crevice assemblies of Zircaloy-4 to Zircaloy-4 to Inconel exposed 84 days to 750 deg F 1500-psi steam or 680 deg F water adjusted to pH 10.5 with LiOH or NH/sub 4/OH. No accelerated corrosion was observed after 56 days exposure to 680 deg F pH 10.5 to 0.01 M solutions of LiCl, LiI, NH/sub 4/Cl, or NH/sub 4/I with or without Fe/sub 3/O/sub 4/ suspensions in the solutions. Severe attack occurred in Fe/sub 3/O/sub 4/- free 680 deg F 0.01 M LiF and NH/sub 4/F solutions. Although large quantities of Fe/sub 3/O/sub 4/ in suspension decreased attack by decreasing the fluoride concentration of the solution, thin surface deposits of Fe/sub 3/O/sub 4/ on the Zircaloy-4 surface did not appear to increase or retard attack in the 0.01 M fluoride solutions. No unusual corrosion occurred in 680 deg F 0.001 M LiF or 0.0001 M NH/sub 4/F solutions. (auth)

• Research Organization: Battelle Memorial Inst., Columbus, Ohio
• DOE Contract Number: W-7405-ENG-92
• NSA Number: NSA-16-015144
• OSTI ID: 4792968
• Report Number(s): BMI-1571
• Country of Publication: United States
• Language: English

Related Subjects

ACIDITY
AMMONIUM COMPOUNDS
CHLORIDES
CORROSION
FILMS
FLUORIDES
HIGH TEMPERATURE
HYDROXIDES
IODIDES
IRON OXIDES
LITHIUM CHLORIDES
LITHIUM FLUORIDES
LITHIUM HYDROXIDES
LITHIUM IODIDES
METALS, CERAMICS, AND OTHER MATERIALS
NICKEL ALLOYS
PRESSURE
SOLUTIONS
STEAM
SURFACES
SUSPENSIONS
WATER
ZIRCALOY