Hydrogen permeation inhibition by zinc–nickel alloy plating on steel XC68

Hajjami, Ali El; Gigandet, M.P.; Petris-Wery, M. De; Catonne, J.C.; Duprat, Jean-Jacques; Thiéry, Laurent; Raulin, F.; Starck, B.; Remy, P.

doi:10.1016/j.apsusc.2008.04.013

Cited by 22 publications

(7 citation statements)

References 24 publications

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“…Nickel is an important, widely used abundantly available metal (El Hajjami, Gigandet et al 2008;Kim and Hwang 2008;Tracey 1988). Industrial activities for the production and use of nickel cause health hazards and environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

Biosorption of nickel with barley straw

Thevannan

Mungroo

Niu

2010

Bioresource Technology

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Nickel contaminated wastewater from plating industries is a major environmental concern. Current treatment methods are often expensive and can also create additional problems. Biosorption is an alternative treatment method that uses inexpensive biomaterials to sequester metals from aqueous solutions. In this study, acid washed barley straw (AWBS) was used for adsorbing nickel ions (Ni 2+ ) from simulated nickel plating wastewater. The adsorption process was rapid and the equilibrium was reached in about anhour. An increase in the initial nickel concentration increased the equilibrium nickel uptake, and the maximum uptake was found to be 8.45 mg/g of AWBS when the initial nickel concentration was1000 mg/L at pH 5. Nickel adsorption was favorable at room temperature than 5 o C and 40 o C, better adsorption rate and equilibrium uptake was observed at 23 o C. Increasing the pH from 3 to 7 increased the equilibrium nickel uptake and the maximum uptake was observed at pH 7, whilst the initial nickel ion concentration was 100 mg/L. The Freundlich isotherm model exhibited better fit with the equilibrium data than the Langmuir equation. Nickel was desorbed using hydrochloric acid solution at pH 2 and the desorption efficiency was 86%. LIST OF TABLES

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Section: Introductionmentioning

confidence: 99%

Biosorption of nickel with barley straw

Thevannan

Mungroo

Niu

2010

Bioresource Technology

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“…For the decay transient, when all the deep traps were already filled, the diffusion of the hydrogen would proceed normally. us, whenever there would be deep traps present, this should be visible as a significant difference in the diffusion coefficient determination methods for charging (3)(4)(5) compared to the discharge method (6).…”

Section: Advances In Materials Science and Engineeringmentioning

confidence: 99%

“…In the pretreatment of the hot-dip galvanizing process, hydrogen may be absorbed in the steel during the pickling stage through contact with the hydrochloric acid which oxidizes the metal and forms adsorbed hydrogen that partly enters the metal lattice. After hot-dip galvanizing, the zinc layer prevents or delays the exit of the hydrogen from the steel [4]. Steels with tensile strength at the level of 800-1000 MPa or higher are considered to be the most susceptible ones to hydrogen embrittlement [5,6].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Determination of Hydrogen Entry to HSLA Steel during Pickling

Aromaa

Pehkonen

Schmachtel

et al. 2018

Advances in Materials Science and Engineering

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Pickling with hydrochloric acid is a standard method to clean steel surfaces before hot-dip galvanizing. When normal low strength steels are pickled, hydrogen formed in pickling reactions does not have any significant harmful effect on the mechanical properties of steel. However, in pickling of steels with higher strength, the penetration of hydrogen into the steel may cause severe damages.e effect of pickling of high-strength low-alloy (HSLA) steels was investigated using a cell construction based on the DevanathanStachurski method with modified anodic surface treatment and hydrogen production using acid. e penetration and the permeability of hydrogen were measured using an electrochemical cell with hydrochloric acid on the one side of the steel sample and a solution of NaOH on the other side. No protective coating, for example, palladium on the anodic side of the sample, is needed. e penetration rate of hydrogen into the steel and exit rate from the steel were lower for higher strength steel.

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“…[15][16][17][18] In addition, even if hydrogen atoms can be absorbed into Zn and Zn-Al coating layers, hydrogen diffusion in the coatings is considered to be slow because diffusion coefficient of hydrogen atom in Zn or Zn alloy coatings is much lower by comparison with that for steels without the coatings. [19][20][21] Therefore, it is considered that i per cannot be observed for Zn and Zn alloy coated steels during the immersion test due to slow kinetics of hydrogen evolution reaction and slow diffusion rate of hydrogen in Zn and Zn alloys while the coatings are intact. However, when large cathodic polarization is applied to Zn and Zn-Al coated steels, i per can be observed in the case of Zn coated steels.…”

Section: Hydrogen Permeation Behavior During Immersionmentioning

confidence: 99%