Hydrogen permeation in metals and alloys: A Brief Review

This is an integrative review deals with the hydrogen-metal interaction mechanisms, reversible and irreversible traps and highlights the use of electrochemical permeation as an important tool of evaluation the Hydrogen embrittlement (HE) mechanism. Due to its simplicity, flexibility, low cost and low risk, this technique is widely used in the study of hydrogen transport and diffusion parameters, contributing to the selection of more resistant steels and alloys. On the other hand, it´s important toothose new efforts should be made to develop and implement new techniques that can be applied to different temperature and pressure conditions.