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Which of the following characteristics of active-passive metal will acquire optimize crevice corrosion resistance?

Which of the following characteristics of active-passive metal will acquire optimize crevice corrosion resistance? Correct Answer A narrow active-passive transition, a small critical current density, and an extended passive region

The optimum crevice corrosion resistance of active-passive transition metal is acquired by having the following characteristics: i. A narrow active-passive transition ii. A small critical current density iii. An extended passive region

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