A Method for Determination of the Permeation Rate of Hydrogen Through Metal Membranes

McBreen, J.; Nonis, L; Beck, W.

doi:10.1149/1.3087209

Cited by 248 publications

(81 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The electrolyte is usually an aqueous solution containing [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] wt% KOH and 1 wt% LiOH, and is saturated with ZnO (about 1M). When an excess amount of electrolyte is used (flooded-electrolyte configuration), the height of the electrolyte meniscus can have a significant effect on the rate and extent of Zn material redistribution (33,(47)(48)(49). Most cell designs call for a minimum amount of electrolyte, barely enough to wet the electrodes and provide an ionic conduction path.…”

Section: Zinc/nickel Oxidementioning

confidence: 99%

The Secondary Alkaline Zinc Electrode

McLarnon

Cairns

1991

J. Electrochem. Soc.

450

328

View full text Add to dashboard Cite

Zinc is the most commonly used battery electrode, and zinc primary batteries have found numerous applications. The zinc electrode is electrochemically reversible in alkaline electrolytes, and there is a strong incentive to develop a practical secondary battery based on this metal. However, secondary batteries that use zinc electrodes typically exhibit short lifetimes, because of problems with zinc material redistribution and undesirable zinc morphologies that form during recharge. There has been a worldwide effort to develop a long-lived secondary alkaline zinc electrode, and marked improvements in cell lifetimes have resulted. This article reviews these efforts, paying particular attention to research and development during the period 1975-1990.

show abstract

Section: Zinc/nickel Oxidementioning

confidence: 99%

The Secondary Alkaline Zinc Electrode

McLarnon

Cairns

1991

J. Electrochem. Soc.

450

328

View full text Add to dashboard Cite

show abstract

“…The electrochemical permeation experiment allows to easily measure the hydrogen flux through a metallic membrane and so is a relevant technique to characterize the hydrogen-metal system. Moreover, to access the real diffusion coefficient, the average concentration and trapped hydrogen, fundamental hypothesis are generally established to explain experimental data [23,24].…”

Section: Introductionmentioning

confidence: 99%

Study of the hydrogen diffusion and segregation into Fe–C–Mo martensitic HSLA steel using electrochemical permeation test

Frappart

Feaugas

Creus

et al. 2010

Journal of Physics and Chemistry of Solids

162

View full text Add to dashboard Cite

Diffusion and trapping mechanisms are studied in order to improve Hydrogen Embrittlement (HE) resistance of high yield strength steels. Investigations were carried on Fe-C-Mo model steel with a quenched and tempered martensitic microstructure. Hydrogen diffusion was studied by using the electrochemical permeation technique.The influence of the charging current densities in 1M H 2 SO 4 at ambient temperature shows a relation between the apparent diffusion coefficient D app and the apparent subsurface concentration of hydrogen C 0app . Two domains can be separated and are mainly associated with a competition between two distinct processes: hydrogen trapping and hydrogen diffusion. These results are correlated to the quantities of reversible and irreversible traps into the membrane. Moreover, the experimental results revealed that the apparent diffusion coefficient increases and the total amount of trapped hydrogen decreases with temperature. The activation energy of diffusion processes (0.26eV) and trapping processes (0.58eV) are supposed to be respectively affiliated with lattice diffusion and with trapping on incidental dislocations and/or on martensitic lath interfaces due to misorientations (geometric necessary dislocations).

show abstract

“…The theoretical curve for a diffusion transient is given by [4,5,15,[18][19][20]22,123,136,137]: Figure 4. A succession of hydrogen permeation transients were measured with increasing and decreasing hydrogen fugacity, by charging at various potentials in 0.1 M NaOH solution, for pure Fe hydrogen pre-charged at −1.500 V Ag/AgCl in 0.1 M NaOH solution for 48 h to achieve steady state surface conditions on the input side.…”

Section: Permeation Cellmentioning

confidence: 99%

Influence of Hydrogen on Steel Components for Clean Energy

Atrens

Liu

Tapia-Bastidas

et al. 2018

CMD

View full text Add to dashboard Cite

The influence of hydrogen on the mechanical properties of four, medium-strength, commercial, quenched-and-temped steels has been studied using the linearly increasing stress test (LIST) combined with cathodic hydrogen charging. The relationship was established between the equivalent hydrogen pressure and the hydrogen charging overpotential during cathodic hydrogen charging, though the use of electrochemical permeation experiments and thermal desorption spectroscopy. The cathodic hydrogen charging conditions were equivalent to testing in gaseous hydrogen at hydrogen fugacities of over a thousand bar. Under these hydrogen-charging conditions, there was no effect of hydrogen up to the yield stress. There was an influence of hydrogen on the final fracture, which occurred at the same stress as for the steels tested in air. The influence of hydrogen was on the details of the final fracture. In some cases, brittle fractures initiated by hydrogen, or DHF: Decohesive hydrogen fracture, initiated the final fracture of the specimen, which was largely by ductile micro-void coalescence (MVC), but did include some brittle fisheye fractures. Each fisheye was surrounded by MVC. This corresponds to MF: Mixed fracture, wherein a hydrogen microfracture mechanism (i.e., that producing the fisheyes) competed with the ductile MVC fracture. The fisheyes were associated with alumina oxide inclusion, which indicated that these features would be less for a cleaner steel. There was no subcritical crack growth. There was essentially no influence of hydrogen on ductility for the hydrogen conditions studied. At applied stress amplitudes above the threshold stress, fatigue initiation, for low cycle fatigue, occurred at a lower number of cycles with increasing hydrogen fugacity and increasing stress amplitude. This was caused by a decrease in the fatigue initiation period, and by an increase in the crack growth rate. In the presence of hydrogen, there was flat transgranular fracture with vague striations with some intergranular fracture at lower stresses. Mechanical overload occurred when the fatigue crack reached the critical length. There was no significant influence of hydrogen on the final fracture.

show abstract

A Method for Determination of the Permeation Rate of Hydrogen Through Metal Membranes

Abstract: A sensitive electrochemical method for the precise measurement of diffusion coefficients and permeation rates of hydrogen through metal membranes is described. A mathematical analysis of the pertinent diffusion equations is given. Suggestions are made regarding uses of the method.

Cited by 248 publications

References 2 publications

The Secondary Alkaline Zinc Electrode

The Secondary Alkaline Zinc Electrode

Study of the hydrogen diffusion and segregation into Fe–C–Mo martensitic HSLA steel using electrochemical permeation test

Influence of Hydrogen on Steel Components for Clean Energy

Contact Info

Product

Resources

About