Abstract
Sodium 12‐molybdophosphate inhibits the corrosion of an actively corroding type 430 stainless steel sample in sulfuric acid by first polarizing the sample to the primary passivation potential. After this potential is reached, the stainless steel sample passivates spontaneously. From the potentiodynamic polarization curves it was deduced that the addition of sodium molybdophosphate to the sulfuric acid does not significantly alter the anodic characteristics of the type 430 steel in sulfuric acid. The experimental results were in agreement with the electrochemical theory for the passivator‐type inhibitors.
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