Which mechanism increases pitting corrosion in an aluminum propeller operating in seawater with increased cavitation?

💡 Explanation

When cavitation increases around an aluminum propeller, the imploding bubbles mechanically erode aluminum oxide layer preventing repassivation on the metal surface. Therefore erosion enhances pitting corrosion, which makes material removal higher by abrasive action. Rather than area increase, cathodic deploarization or insoluble layer generation.

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