Question

What is meant by hydrogen blistering?

(a) Entrapment of hydrogen molecules in the metal voids

(b) Formation of brittle metal hydrides

(c) Entrapment of metal hydrides in the metal voids

(d) Entrapment of hydrogen molecules and metal hydrides in the metal voids

I got this question in an international level competition.

I would like to ask this question from Eight Forms topic in division Eight Forms of Corrosion of Corrosion Engineering

Answer 1

Correct choice is (a) Entrapment of hydrogen molecules in the metal voids

Best explanation: Hydrogen blistering refers to the local deformation of a metal due to the entrapment of hydrogen molecules in the metal voids. Initially, hydrogen atoms diffuse into metal and react with each other to form a hydrogen molecule.