Abstract
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 obtained in static sodium hydroxide in a closed volume over the temperature range 1033°–1273°K. It is found that the corrosion rate can be followed by monitoring the hydrogen produced by the reaction, which can be written asAfter 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.
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