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Quarterly progress report on the zirconium metal-water oxidation kinetics program sponsored by the NRC Division of Reactor Safety Research, April--June 1976. [LWR's]

Technical Report ·
OSTI ID:7338208
Except for scoping tests of the influence of steam pressure on the oxidation behavior of Zircaloy-4, the experimental phase of the reaction rate studies was completed. Kinetic data for the isothermal steam-Zircaloy reaction between 900 and 1500/sup 0/C (1652--2732/sup 0/F) are reported, and the parabolic rate constants for the growth of oxide, alpha, and Xi (oxide + alpha) layers as well as that for total oxygen consumption are given in the form of Arrhenius equations. The transient temperature oxidation experiments are described along with scoping tests of the effects of steam impurities and small variations in alloy content. A study of the oxidation of Zircaloy in high pressure steam was initiated, and a final report on our investigation of the diffusion of oxygen in ..beta..-Zircaloy-4 was prepared. The results of a limited number of oxygen diffusivity measurements in oxygen-stabilized ..cap alpha..-Zircaloy-4 are also reported.
Research Organization:
Oak Ridge National Lab., Tenn. (USA)
DOE Contract Number:
W-7405-ENG-26
OSTI ID:
7338208
Report Number(s):
ORNL/NUREG/TM-41
Country of Publication:
United States
Language:
English

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