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← ScienceWhich consequence results when a corrosion-resistant Chromium(III) oxide layer on stainless steel is exposed to extreme chloride concentrations?
A)Pitting corrosion sharply accelerates there✓
B)Passivation spontaneously reinforces and deepens
C)The oxide layer converts to ferrite
D)Tensile strength significantly increases locally
💡 Explanation
Pitting corrosion accelerates because chloride ions disrupt the passive layer via **ionic transport**, forming localized anodes and cathodes. This intense electrochemical activity rapidly dissolves the metal, therefore creating pits rather than reinforcing the passive layer.
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