Effects of La3+ on the hydrogen permeation and evolution kinetics in X70 pipeline steel

Zhengyi Xu; Pengyuan Zhang; Bo Zhang; Bing Lei; Zhiyuan Feng; Junyi Wang; Yawei Shao; Guozhe Meng; Yanqiu Wang; Fuhui Wang

Journal of Pipeline Science and Engineering (Jun 2023)

Effects of La3+ on the hydrogen permeation and evolution kinetics in X70 pipeline steel

Zhengyi Xu,
Pengyuan Zhang,
Bo Zhang,
Bing Lei,
Zhiyuan Feng,
Junyi Wang,
Yawei Shao,
Guozhe Meng,
Yanqiu Wang,
Fuhui Wang

Affiliations

Zhengyi Xu: Corrosion and Protection Laboratory, Key Laboratory of Superlight Materials and Surface Technology (Harbin Engineering University), Ministry of Education, Harbin 150001, China
Pengyuan Zhang: Corrosion and Protection Laboratory, Key Laboratory of Superlight Materials and Surface Technology (Harbin Engineering University), Ministry of Education, Harbin 150001, China
Bo Zhang: China Electronic Product Reliability and Environmental Testing Research Institute, China
Bing Lei: Marine Corrosion and Surface Engineering Team, School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
Zhiyuan Feng: Marine Corrosion and Surface Engineering Team, School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
Junyi Wang: Corrosion and Protection Laboratory, Key Laboratory of Superlight Materials and Surface Technology (Harbin Engineering University), Ministry of Education, Harbin 150001, China
Yawei Shao: Corrosion and Protection Laboratory, Key Laboratory of Superlight Materials and Surface Technology (Harbin Engineering University), Ministry of Education, Harbin 150001, China
Guozhe Meng: Marine Corrosion and Surface Engineering Team, School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China; Corresponding authors.
Yanqiu Wang: Corrosion and Protection Laboratory, Key Laboratory of Superlight Materials and Surface Technology (Harbin Engineering University), Ministry of Education, Harbin 150001, China; Corresponding authors.
Fuhui Wang: Corrosion and Protection Laboratory, Key Laboratory of Superlight Materials and Surface Technology (Harbin Engineering University), Ministry of Education, Harbin 150001, China; Corrosion and Protection Division, Shenyang National Laboratory for Material Science, Northeastern University, NO. 3-11, Wenhua Road, Heping District, Shenyang 110819 Liaoning, China

Journal volume & issue: Vol. 3, no. 2
p. 100107

Abstract

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The inhibitory effect of La3+ on the hydrogen permeation of X70 pipeline steel was investigated via steady-state hydrogen permeation current (i∞) through electrochemical hydrogen permeation tests. The experimental permeation data were fitted with a constant concentration model and Electrochemical Impedance Spectroscopy (EIS) tests were conducted to characterize the activity of Hydrogen Evolution Reaction (HER) after the optimization of electrochemically active surface area. Additionally, the kinetics of HER and the adsorption/desorption process is calculated by Iyer-Pickering-Zamanzadeh (IPZ) and surface effect models, of which the results demonstrate that the La3+ in the corrosion products could effectively reduce the rate of Volmer reaction and hydrogen adsorption process, and accelerate the process of hydrogen atom desorption, thus leading to the remarkable decrease in C0.

Published in Journal of Pipeline Science and Engineering

ISSN: 2667-1433 (Online)
Publisher: KeAi Communications Co. Ltd.
Country of publisher: China
LCC subjects: Technology: Engineering (General). Civil engineering (General)
Website: https://www.keaipublishing.com/en/journals/journal-of-pipeline-science-and-engineering/

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