Determination of the hydrogen fugacity during electrolytic charging of steel

被引:108
|
作者
Liu, Qian [1 ,2 ]
Atrens, Aleks D. [3 ]
Shi, Zhiming [2 ,4 ]
Verbeken, Kim [5 ]
Atrens, Andrej [1 ,2 ]
机构
[1] Univ Queensland, Sch Mech & Min Engn, St Lucia, Qld 4072, Australia
[2] Univ Queensland, Queensland Ctr Adv Mat Proc & Mfg AMPAM, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia
[3] Univ Queensland, Sch Mech & Min Engn, Queensland Geothermal Energy Ctr Excellence, St Lucia, Qld 4072, Australia
[4] Univ Queensland, Def Mat Technol Ctr, Brisbane, Qld 4072, Australia
[5] Univ Ghent, Dept Mat & Sci Engn, B-9052 Ghent, Belgium
基金
澳大利亚研究理事会;
关键词
Steel; Hydrogen permeation; Potentiostatic; STRESS-CORROSION CRACKING; THERMAL-DESORPTION SPECTROSCOPY; HIGH-STRENGTH STEEL; AUSTENITIC STAINLESS-STEEL; X70 PIPELINE STEEL; 1.6 CR STEEL; MECHANICAL-PROPERTIES; PLASTIC-DEFORMATION; TENSILE PROPERTIES; ELECTROCHEMICAL PERMEATION;
D O I
10.1016/j.corsci.2014.06.033
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This work studied the determination of the hydrogen fugacity during electrolytic charging. With a virgin surface, there were irregular permeation transients, attributed to irreproducible surface conditions. Cathodic pre-charging conditioned the entry side to a stable state. Permeability transients were used to measure the critical parameters in the thermodynamic relationship between hydrogen activity and electrochemical potential. At the same overpotential, the hydrogen fugacity in the pH 12.6 0.1 M NaOH solution was higher than that in the pH 2 0.1 M Na2SO4 solution, attributed to differences in (i) the hydrogen evolution reaction, (ii) the surface state, and (iii) the true surface area. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:239 / 258
页数:20
相关论文
共 50 条