Corrosion of carbon steel in the [P 14666 ][Br] ionic liquid: The effects of γ-radiation and cover gas

Morco, Ryan P.; Musa, Ahmed Y.; Momeni, Mojtaba; Wren, J. C.

doi:10.1016/j.corsci.2015.06.027

Cited by 14 publications

(8 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, bulk phase water is able to absorb energy effectively and this energy is used to break water molecules into redox active species, ranging from highly oxidizing ( • OH, H 2 O 2 , O 2 ) to highly reducing ( • e aq − , • O 2 − ) [1,[13][14][15][16][17][18][19]. The radiolytic production of these species will affect the driving force for electrochemical corrosion and the rate of corrosion [1,[20][21][22][23][24]. The rate of corrosion is controlled by a number of factors beyond the electrochemical potential of the system.…”

Section: Introductionmentioning

confidence: 99%

Combined effect of gamma-radiation and pH on corrosion of Ni–Cr–Fe alloy inconel 600

Musa

Wren

2016

Corrosion Science

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Combined effect of gamma-radiation and pH on corrosion of Ni–Cr–Fe alloy inconel 600

Musa

Wren

2016

Corrosion Science

Self Cite

View full text Add to dashboard Cite

“…Thus, at early stages of corrosion iron dissolution will occur preferentially from the active α-Fe phases. This oxidative dissolution will leave cementite layers on the surfaces of the pearlite grains, 16 but smooth surfaces on the pure α-Fe grains.…”

Section: Rad No Radmentioning

confidence: 99%

“…The ferrous and ferric ions present on the surface of Fe(OH) 2 [16] Hereafter, the phase designations of the iron hydroxides/oxides are omitted.…”

Section: Proposed Mechanism For Evolution Of Cs Corrosionmentioning

confidence: 99%

“…[13][14][15][16][17] Absorption by water of high energy radiation induces ionization and decomposition of water molecules to produce a number of redox active species. For example, γ-irradiation of liquid water produces oxidants such as H 2 O 2 , 14,15,18 while humid air radiolysis produces NO x and HNO 3 that will dissolve in any condensed water that is available.…”

mentioning

confidence: 99%

“…12 Interaction of matter with high energy photons or particles usually results in the absorbed energy being dissipated predominantly as heat (increasing the material's temperature slightly), with the important exception of high dielectric media, notably water. [13][14][15][16][17] Absorption by water of high energy radiation induces ionization and decomposition of water molecules to produce a number of redox active species. For example, γ-irradiation of liquid water produces oxidants such as H 2 O 2 , 14,15,18 while humid air radiolysis produces NO x and HNO 3 that will dissolve in any condensed water that is available.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Inverse Crevice Corrosion of Carbon Steel: Effect of Solution Volume to Surface Area

Guo

et al. 2017

J. Electrochem. Soc.

View full text Add to dashboard Cite

Crevice corrosion of carbon steel was investigated in different exposure environments by performing coupon exposure and electrochemical tests. The extent of corrosion on the bold surface of a carbon steel crevice coupon was more severe at 80 • C than at 21 • C, in aerated rather than dearated solutions, and with γ-radiation present. In contrast to normal crevice corrosion, we observed 'inverse crevice corrosion' behavior, the phenomenon where it is the corrosion on the bold surface that is accelerated when coupled, rather than that on the crevice surface. The coupling current measured between a crevice and a bold electrode in an electrochemical cell was also negative. This inverse crevice corrosion behavior is attributed to a significantly lower metal cation dissolution capacity of the small occluded water volume in the crevice, compared to that of the bulk water volume over the bold surface. The reduction in dissolution capacity results in faster and earlier formation of a protective oxide layer. Corrosion of the bold and crevice surfaces evolves at different rates, leading to galvanically accelerated corrosion of the bold surface. The effect of γ-radiation on corrosion evolution in different solution environments leading to inverse crevice corrosion is discussed. Many countries, including Canada, are exploring long-term disposal of used nuclear fuel in a deep geological repository (DGR) using a multiple-barrier system, with a key barrier being the used fuel container (UFC).1-7 Certain UFC designs considered for disposal in a DGR consist of an inner vessel made of carbon steel (CS) or cast iron for structural strength, with an outer Cu shell or coating as an external corrosion barrier (e.g. the Swedish and Canadian UFC designs).3,8 The current Canadian UFC design consists of a pressure-vessel-grade CS pipe pre-coated with Cu. The vessel would be sealed by laser welding on site, in air, by attaching a pre-Cu-coated hemispherical CS head at one end. This would be followed by applying a Cu coating over the welded regions.9,10 A concern regarding the structural integrity of the inner CS vessels of this UFC design is localized corrosion.11 Moisture trapped inside a UFC could condense on the stressed regions near the welds and, for the Canadian design, within the gap between the hemispherical head and the body. This could lead to localized corrosion, a potential failure mechanism of the container.The environment inside the UFC will be initially humid and it will include a flux of ionizing radiation (and particularly γ-radiation), emitted from the decay of radionuclides in the used fuel. For the current Canadian UFC design the dose rate at the inner surface of a UFC is anticipated to be less than 100 Gy·h -1 (1 Gy = 1 J·kg -1 ). The dose rate is calculated to be 51 Gy·h -1 for 10-year old fuel and the dose rate will steadily decreases to 4.9 Gy·h -1 after the used fuel ages for 100 years. 12Interaction of matter with high energy photons or particles usually results in the absorbed energy being dissipated predominantly...

show abstract

Stainless Steel Activation for Efficient Alkaline Oxygen Evolution in Advanced Electrolyzers

Zuo,

Mastronardi,

Gamberini

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

Designing robust and cost‐effective electrocatalysts for efficient alkaline oxygen evolution reaction (OER) is of great significance in the field of water electrolysis. In this study, we introduce an electrochemical strategy to activate stainless steel (SS) electrodes for efficient OER. By cycling the SS electrode within a potential window that encompasses the Fe(II)↔Fe(III) process, we can greatly enhance its OER activity compared to using a potential window that excludes this redox reaction, decreasing the overpotential at current density of 100 mA cm−2 by 40 mV. Electrochemical characterization, Inductively Coupled Plasma – Optical Emission Spectroscopy and operando Raman measurements demonstrated that the Fe leaching at the SS surface can be accelerated through a Fe → γ‐Fe2O3 → Fe3O4 or FeO → Fe2+ (aq.) conversion process, leading to the sustained exposure of Cr and Ni species. While Cr leaching occurs during its oxidation process, Ni species display higher resistance to leaching and gradually accumulate on the SS surface in the form of OER‐active Fe‐incorporated NiOOH species. Furthermore, a potential‐pulse strategy was also introduced to regenerate the OER‐activity of 316‐type SS for stable OER, both in the three‐electrode configuration (without performance decay after 300 h at 350 mA cm−2) and in an alkaline water electrolyzer (ca. 30 mV cell voltage increase after accelerated stress test‐AST). The AST‐stabilized cell can still reach 1000 mA cm−2 and 4000 mA cm−2 at cell voltages of 1.69 V and 2.1 V, which makes it competitive with state‐of‐the‐art electrolyzers based on ion‐exchange‐membranes using Ir‐based anodes.This article is protected by copyright. All rights reserved

show abstract

Corrosion of carbon steel in the [P 14666 ][Br] ionic liquid: The effects of γ-radiation and cover gas

Cited by 14 publications

References 47 publications

Combined effect of gamma-radiation and pH on corrosion of Ni–Cr–Fe alloy inconel 600

Combined effect of gamma-radiation and pH on corrosion of Ni–Cr–Fe alloy inconel 600

Inverse Crevice Corrosion of Carbon Steel: Effect of Solution Volume to Surface Area

Stainless Steel Activation for Efficient Alkaline Oxygen Evolution in Advanced Electrolyzers

Contact Info

Product

Resources

About