Question

Corrosion along the grain boundaries is called as __________

(a) Stress corrosion

(b) Inter granular corrosion

(c) Water line corrosion

(d) Pitting corrosion

I got this question in an interview.

This key question is from Types of Corrosion and Passivity in section Electro Chemical Cells and Corrosion of Applied Chemistry

Answer 1

Right answer is (b) Inter granular corrosion

The explanation is: Corrosion along the grain boundaries is called as the inter granular corrosion and stress corrosion is due to the static tensile strength.