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The difference in metal ion or oxygen concentration between the crevice and its surroundings is the main reason for crevice corrosion.

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The difference in metal ion or oxygen concentration between the crevice and its surroundings is the main reason for crevice corrosion.

(a) True

(b) False

This question was addressed to me in an interview for job.

The query is from Eight Forms in portion Eight Forms of Corrosion of Corrosion Engineering

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Best answer
Right option is (a) True

Best explanation: Crevice corrosion is mainly occurred due to the difference in metal ion or oxygen concentration between the crevice and its surroundings. This is due to the unavailability of oxygen in the crevice, this results in the dissolution of metal in a crevice by protecting adjacent surface cathodically.

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