Abstract
Potentiodynamic polarization experiments were performed in 0.1N hydrochloric acid with 17% chromium ferritic stainless steels containing up to 3% molybdenum and with 18% Cr‐2% Mo ferritic stainless steels containing 0–2% nickel and 0–2% titanium. Potentiodynamic polarization studies with the 17% chromium alloys were also performed in 1N hydrochloric acid and in 1N sulfuric acid + 0.1N sodium chloride media. The critical current densities were significantly decreased with an increased molybdenum content. The pitting potentials were increased with increased molybdenum and titanium contents, whereas nickel additions had no effect. All materials were sensitive to crevice corrosion. Sulfate ions in the inhibited pitting corrosion and suppressed crevice corrosion.
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