Hydrogen charging of carbon and low alloy steel by electrochemical methods

Abstract Atomic hydrogen can be the result of different processes like electroplating, chemical and electrochemical pickling treatments, in welding or by cathodic corrosive fluids. Moreover, adsorption atomic affect materials contact with high pressure gaseous hydrogen. Once entered material, interacts metal structure may produce a “damage” various forms, such as Hydrogen Induced Cracking (HIC), delayed fracture, blistering embrittlement. In particular, when H 2 S is present (“sour service”), metallic materials, carbon low alloy steels, suffer damage Sour service must used compliance international accepted standards, worldwide oil gas activities, fluids are classified sour. The study has been carried out order to set up an method charge two typical pipeline steels. reason use avoid any critical conditions from point view preparation, safety disposal. content specimens was measured methods: hot glycerol bath Inert Gas Fusion (IGF) analysis. about 0.6–2 ppm; mechanical performances were assessed means J integral tests: pronounced decrease fracture toughness observed for charged specimens. Graphical