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Based upon a thermodynamic study of the accelerated oxidation of superalloys exposed in oxidizing environments containing minor quantities of sea salt, it is concluded that (a) NaCl is necessary only to form Na2SO4, (b) Na2SO4 is formed by the reaction between NaCl and the oxides of sulfur, (SO2 and SO3) and (c) accelerated oxidation attack occurs only when Na2SO4 is present in the condensed form. Experimental verifications of the above conclusions is presented.
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DeCrescente et al. (1968) studied this question.
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