Influence of ionic strength on hydrogen generation during interaction of copper with deoxygenated neutral solution

Betova, Iva; Bojinov, Martin; Lilja, Christina

doi:10.1016/j.corsci.2021.109552

Cited by 4 publications

(2 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The pH values were chosen by considering their relationship with the stability of passive film [7]. Considering the uniform ion strength [17] or the conductivity of the solution, 0.05 M Na 2 SO 4 was added to the solutions of pH = 7.0 and 10.0. In solutions with pH = 7.0 and 10.0, a preliminary polarization was applied at a constant potential of −1.0 V for 60 s to stabilise the surface.…”

Section: Methodsmentioning

confidence: 99%

Tribocorrosion Behaviour of SUS430 Stainless Steel in Aqueous Solutions with Different pH

Wang,

Ohgata,

et al. 2023

Coatings

View full text Add to dashboard Cite

To reveal the influence of passive film on the tribocorrosion behaviour of stainless steel, SUS430 was loaded at 2.0 N or 10.0 N in aqueous solutions with various pH from 1.0 to 10.0. The pure wear behaviour was investigated in the air for comparison. The polarization behaviour, the morphology of the worn or tribocorroded surface, and the depth profiles of the formed groove were measured to discuss the mechanism. The passive state was confirmed at pH = 7.0 and 10.0, but vanished at pH = 1.0 and 2.0. The pure wear in air depended on the applied loads, rather than the sliding time. On the other hand, the tribocorrosion in deionised water was much smaller than the pure wear in air. Under a load of 2.0 N, the tribocorrosion at pH = 1.0 was weaker than pH = 2.0. However, the situation reversed when increasing the load to 10.0 N. The tribocorrosion in neutral and alkaline solutions is considerably smaller than in acid solutions.

show abstract

Section: Methodsmentioning

confidence: 99%

Tribocorrosion Behaviour of SUS430 Stainless Steel in Aqueous Solutions with Different pH

Wang,

Ohgata,

et al. 2023

Coatings

View full text Add to dashboard Cite

show abstract

“…Excess H 2 can also be formed by reactive species formed during the interaction of metal oxides with water, as discussed above. The role of reactive species on metal oxide surfaces in accelerating the dissociation of water and producing H 2 in neutral and alkaline solutions has been also proposed in the framework of different studies, such as the development of catalysts for fuel cells [72,73] or metal corrosion [55,[74][75][76]. Betova et al [74] proposed a model to explain the observed H 2 generation in the presence of copper metal and deoxygenated water involving surface sites available for adsorption of hydroxide intermediates acting as catalysts in the splitting of adsorbed water molecules.…”

Section: Redox Conditions At the Spent Fuel Surfacementioning

confidence: 99%

An Alternative Conceptual Model for the Spent Nuclear Fuel–Water Interaction in Deep Geologic Disposal Conditions

Pastina

LaVerne

2021

Applied Sciences

View full text Add to dashboard Cite

For the long-term safety assessment of direct disposal of spent nuclear fuel in deep geologic repositories, knowledge on the radionuclide release rate from the UO2 matrix is essential. This work provides a conceptual model to explain the results of leaching experiments involving used nuclear fuel or simulant materials in confirmed reducing conditions. Key elements of this model are: direct effect of radiation from radiolytic species (including defects and excited states) in the solid and in the first water layers in contact with its surface; and excess H2 may be produced due to processes occurring at the surface of the spent fuel and in confined water volumes, which may also play a role in keeping the spent fuel surface in a reduced state. The implication is that the fractional radionuclide release rate used in most long-term safety assessments (10−7 year−1) is over estimated because it assumes that there is net UO2 oxidation caused by radiolysis, in contrast with the alternative conceptual model presented here. Furthermore, conventional water radiolysis models and radiation chemical yields published in the literature are not directly applicable to a heterogeneous system such as the spent fuel–water interface. Suggestions are provided for future work to develop more reliable models for the long-term safety assessment of spent nuclear fuel disposal.

show abstract

Corrosion failure analysis of hollow copper coil used in generator internal cooling water system operated at low-oxygen/neutral water chemistry

Wang

Wang²,

Jia³

et al. 2022

Engineering Failure Analysis

View full text Add to dashboard Cite

Influence of ionic strength on hydrogen generation during interaction of copper with deoxygenated neutral solution

Cited by 4 publications

References 47 publications

Tribocorrosion Behaviour of SUS430 Stainless Steel in Aqueous Solutions with Different pH

Tribocorrosion Behaviour of SUS430 Stainless Steel in Aqueous Solutions with Different pH

An Alternative Conceptual Model for the Spent Nuclear Fuel–Water Interaction in Deep Geologic Disposal Conditions

Corrosion failure analysis of hollow copper coil used in generator internal cooling water system operated at low-oxygen/neutral water chemistry

Contact Info

Product

Resources

About