Corrosion And Hydriding Behaviour Of Some Zr 2.5 wt % Nb Alloys In Water, Steam And Various Gases At High Temperature
Exposed to water at temperatures up to 325 deg C, the Zr 2.5 wt % Nb alloy has corrosion resistance acceptable for power reactors. Resistance to air and carbon dioxide is less favorable. Addition of Sn, Fe, and Cr to the base alloy has little effect on the corrosion resistance, but the addition of copper reduces corrosion in water and steam to some extent and in air and carbon dioxide to a greater extent. Studies of the effect of heat treatment suggest that the amount of Nb in alpha solid-solution controls the rate of oxidation and hydriding and that concentration, size, and distribution of second phase is of little importance. Initial results obtained in NRX indicate that a thermal flux of 3 to 7 x 10/sup 13/ n/cm/sup 2//sec has little or no effect on oxidation and hydriding in high temperature water. (P.C.H.)
- Research Organization:
- Atomic Energy of Canada Ltd., Chalk River, Ontario (Canada)
- NSA Number:
- NSA-16-022541
- OSTI ID:
- 4826373
- Report Number(s):
- AECL-1513
- Resource Relation:
- Conference: IAEA Conference on Corrosion of Reactor Materials, Salzburg, Austria, June 1962.
- Country of Publication:
- Canada
- Language:
- English
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Related Subjects
AIR
CARBON DIOXIDE
CHROMIUM ALLOYS
CONTROL ELEMENTS
COPPER ALLOYS
CORROSION
DISTRIBUTION
EFFICIENCY
GRAIN SIZE
HEAT TREATMENTS
HYDRIDES
IRON ALLOYS
NEUTRON FLUX
NIOBIUM
NIOBIUM ALLOYS
OXIDATION
QUANTITY RATIO
SOLID SOLUTIONS
STABILITY
STEAM
TEMPERATURE
THERMAL NEUTRONS
TIN ALLOYS
WATER
ZIRCONIUM ALLOYS
NESDPS Office of Nuclear Energy Space and Defense Power Systems