Question

Which of the following will result due to cavitation damage of a metal?

(a) Mechanical action

(b) Chemical dissolution

(c) Both mechanical action and chemical dissolution

(d) Neither mechanical action nor chemical dissolution

The question was asked in an interview for internship.

The origin of the question is Eight Forms in chapter Eight Forms of Corrosion of Corrosion Engineering

Answer 1

Correct answer is (c) Both mechanical action and chemical dissolution

To explain I would say: Cavitation damage is the special form of erosion-corrosion that occurs by the formation and collapse of vapor bubbles in a liquid near a metal surface. It results in the mechanical and chemical dissolution of metal.