Hydrogen Evolution and Absorption in an API X100 Line Pipe Steel Exposed to Near-Neutral pH Solutions

被引：21
作者：
Ha, Hung M. [1 ]
Gadala, Ibrahim M. [1 ]
Alfantazi, Akram [1 ,2 ]
机构：
[1] Univ British Columbia, Dept Mat Engn, Corros Grp, Vancouver, BC V5Z 1M9, Canada
[2] Petr Inst, Dept Chem Engn, Abu Dhabi, U Arab Emirates
来源：
ELECTROCHIMICA ACTA | 2016年 / 204卷
关键词：
stress corrosion cracking; line pipe steel; hydrogen embrittlement; hydrogen evolution; hydrogen permeation; STRESS-CORROSION CRACKING; CARBON-DIOXIDE CORROSION; C-MN STEEL; ELECTROCHEMICAL POLARIZATION; CO2-HCO3--CO32-SOLUTIONS; DISSOCIATION-CONSTANTS; CALCAREOUS DEPOSITS; STRAIN-RATE; MILD-STEEL; BEHAVIOR;
D O I：
10.1016/j.electacta.2016.03.167
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Hydrogen evolution kinetics and hydrogen absorption in an API X100 line pipe steel exposed to near-neutral pH solutions is studied in this work. At the corrosion potential, dissolved CO2 in the solution accelerates the hydrogen evolution kinetics through the carbonic acid discharge reaction. At potentials more negative than the corrosion potential, hydrogen evolution due to bicarbonate discharge dominates the other cathodic reactions occurring at the ocp. The hydrogen diffusivity in the API X100 steel is found to be approximately 4.4 x 10 x (7) cm(2)/s. A measurable amount of diffusible hydrogen of approximately 1 appm is detected in the steel at the freely corroding condition using an electrochemical hydrogen permeation technique. Higher concentration of diffusible hydrogen is observed at more negative applied potentials as well as at higher CO2 partial pressures. The results in this paper support the attribution of stress corrosion cracking of pipelines in near-neutral pH trapped water environments to hydrogen embrittlement. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：18 / 30
页数：13
相关论文
共 74 条
[41]   Effect of Membrane Thickness on Hydrogen Permeation in Steels During Wet Hydrogen Sulfide Exposure [J].
Kittel, J. ;
Ropital, F. ;
Pellier, J. .
CORROSION, 2008, 64 (10) :788-799
[42]   Effect of microstructure on hydrogen-induced cracking of linepipe steels [J].
Koh, S. U. ;
Jung, H. G. ;
Kang, K. B. ;
Park, G. T. ;
Kim, K. Y. .
CORROSION, 2008, 64 (07) :574-585
[43]   Effect of alloying elements on the susceptibility to sulfide stress cracking of line pipe steels [J].
Koh, SU ;
Yang, BY ;
Kim, KY .
CORROSION, 2004, 60 (03) :262-274
[44]   Effect of line pipe steel microstructure on susceptibility to sulfide stress cracking [J].
Koh, SU ;
Kim, JS ;
Yang, BY ;
Kim, KY .
CORROSION, 2004, 60 (03) :244-253
[45]   Hydrogen trap states in ultrahigh-strength AERMET 100 steel [J].
Li, DM ;
Gangloff, RP ;
Scully, JR .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2004, 35A (03) :849-864
[46]   Effect of hydrogen on the stress corrosion cracking behavior of X80 pipeline steel in Ku'erle soil simulated solution [J].
Liang, Ping ;
Du, Cui-wei ;
Li, Xiao-gang ;
Chen, Xu ;
Liang, Zhang .
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS, 2009, 16 (04) :407-413
[47]   Reactions of pipeline steels in carbon dioxide solutions [J].
Linter, BR ;
Burstein, GT .
CORROSION SCIENCE, 1999, 41 (01) :117-139
[48]   ELECTROCHEMICAL POLARIZATION AND STRESS-CORROSION CRACKING BEHAVIORS OF A PIPELINE STEEL IN DILUTE BICARBONATE SOLUTION WITH CHLORIDE-ION [J].
LIU, X ;
MAO, X .
SCRIPTA METALLURGICA ET MATERIALIA, 1995, 33 (01) :145-150
[49]   Failures by SCC in buried pipelines [J].
Manfredi, C ;
Otegui, JL .
ENGINEERING FAILURE ANALYSIS, 2002, 9 (05) :495-509
[50]   A METHOD FOR DETERMINATION OF PERMEATION RATE OF HYDROGEN THROUGH METAL MEMBRANES [J].
MCBREEN, J ;
NANIS, L ;
BECK, W .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1966, 113 (11) :1218-&
12345678