Abstract
Abstract The hydrogen induced cracking (HIC) susceptibility of line pipe steel is affected by the hydrogen permeation rate. Many environmental factors, such as the partial pressure of H2S and CO2, temperature, cations, and the solution pH, affect the hydrogen permeation rate. This paper investigates the influence of these environmental factors on hydrogen permeation by using an autoclave with an electrochemical permeation measurement system. The results are discussed based on the corrosion film analysis of the steel surface.
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