Corrosion of steels in molten sodium hydroxide

Journal Article · Mon Aug 01 04:00:00 EDT 1977 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2133539· OSTI ID:5061797

Newman, R N; Smith, C A; Smith, R J

The role of sodium hydroxide corrosion is discussed in relation to the wastage of materials observed in fast reactor boilers under fault conditions in the vicinity of a water leak into sodium. An experimental technique to study the corrosion under varying conditions is described. The results presented are for 2/sup 1///sub 4/ Cr-1Mo obtained in static sodium hydroxide in a closed volume over the temperature range 1033/sup 0/--1273/sup 0/K. It is found that the corrosion rate can be followed by monitoring the hydrogen produced by the reaction, which can be written as Fe + 2NaOH = NaFeO/sub 2/ + NaH + /sup 1///sub 2/ H/sub 2/. After an initial acceleration period the rate law is parabolic. The effect on the corrosion rate of melt and cover gas composition has been in part investigated, and the relevance of mass flow of reactant is discussed.

• Research Organization: Berkeley Nuclear Labs., Eng.
• OSTI ID: 5061797
• Journal Information: J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 124:8; ISSN JESOA
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210500* -- Power Reactors
Breeding
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALKALI METAL COMPOUNDS
ALLOYS
BOILERS
BREEDER REACTORS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
CORROSION
CORROSIVE EFFECTS
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
HYDROGEN COMPOUNDS
HYDROXIDES
IRON ALLOYS
IRON BASE ALLOYS
LEAKS
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
OXYGEN COMPOUNDS
REACTORS
SODIUM COMPOUNDS
SODIUM HYDROXIDES
STEAM GENERATORS
STEELS
VAPOR GENERATORS