Question

Deterioration of paint and rubber by sunlight or chemicals is not a corrosion.

(a) True

(b) False

This question was posed to me in a job interview.

The above asked question is from Corrosion and its Classification in chapter Corrosion Principles of Corrosion Engineering

Answer 1

The correct answer is:

(a) True

Explanation:

The deterioration of paint and rubber by sunlight (photo-oxidation) or chemicals (chemical degradation) is not classified as corrosion. Corrosion specifically refers to the degradation of metals due to chemical reactions, typically involving the interaction with environmental elements like oxygen, water, or acids.

While the deterioration of paint or rubber is a form of material degradation, it is not considered corrosion because corrosion is a term traditionally reserved for metallic materials. Instead, the breakdown of paint and rubber falls under categories like weathering or chemical degradation.