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← ScienceWhich consequence results when excess chloride accumulates near steel?
A)Increased rate of chloride ion diffiusion
B)Passive oxide layer destabilization and pitting✓
C)Accelerated grain boundary electromigration failure
D)Formation of amorphous carbide stress concentrators
💡 Explanation
More chloride causes passive layer breakdown because of preferential adsorption, a process where chloride ions accumulate, weakening the bonds in the oxide layer; therefore, pitting results, rather than enhanced diffusion or alternative high-temperature effects, given localized bond disruption.
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