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← ScienceWhich outcome results when chloride ion concentration increases sharply near stainless-steel?
A)Increased localized anode dissolution✓
B)Enhanced passivation layer density
C)Reduced galvanic corrosion coupling
D)Decreased metallic surface pitting
💡 Explanation
Increased chloride concentration induces pitting corrosion, due to a breakdown of the passive layer. Crevice Corrosion occurs, because the depassivation of the metal surface accelerates when chlorides accumulate; therefore, localized anode dissolution increases, rather than the metal passivating as galvanic couplings require oxidizing agents.
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