| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Mercier, Dimitri
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Hydroxyl transport mechanisms upon passivation of Cr-Fe-Co-Ni-Mo multi-principal element alloy surfaces investigated by isotopic labellingcitations
- 2023Effects of Chloride Ions on Passive Oxide Films Formed on Cr-Fe-Co-Ni(-Mo) Multi-Principal Element Alloy Surfacescitations
- 2023Impact of microbial activity on the formation of a protective layer on 5083 aluminium alloy in marine environment
- 2023XPS study of the thermal stability of passivated NiCrFeCoMo multi‐principal element alloy surfacescitations
- 2023XPS study of the thermal stability of passivated NiCrFeCoMo multi‐principal element alloy surfacescitations
- 2023Early-stage surface oxidation of the equiatomic CoCrFeMnNi high entropy alloy studied in situ by XPScitations
- 2023Advanced characterization of biomineralization layer formed on Al-Mg alloy in marine environment
- 2023Mechanism of Corrosion of Cast Aluminum-Silicon Alloys in Seawater. Part 2: Characterization and Field Testing of Sol-Gel-Coated Alloys in the Adriatic Seacitations
- 2023Origin of enhanced passivity of Cr–Fe–Co–Ni–Mo multi-principal element alloy surfacescitations
- 2023Effect of surface preparation by high-temperature hydrogen annealing on the passivation of Ni-20 at.% Cr alloy in sulfuric acidcitations
- 2023Effect of surface preparation by high-temperature hydrogen annealing on the passivation of Ni-20 at.% Cr alloy in sulfuric acidcitations
- 2023Effect of marine microbial activity in corrosion inhibition of 5083 aluminium alloy [Comunicação oral]
- 2022Enhanced passivity of Cr-Fe-Co-Ni-Mo multi-component single-phase face-centred cubic alloys: design, production and corrosion behaviourcitations
- 2022Effect of marine microbial activity in corrosion inhibition of 5083 aluminium alloy
- 2021XPS and ToF-SIMS Investigation of Native Oxides and Passive Films Formed on Nickel Alloys Containing Chromium and Molybdenumcitations
- 2021Insight on passivity of high entropy alloys: thermal stability and ion transport mechanisms in the passive oxide film on CoCrFeMnNi surfacescitations
- 2020Study of the surface oxides and corrosion behaviour of an equiatomic CoCrFeMnNi high entropy alloy by XPS and ToF-SIMScitations
- 2020Inhibition of Mg Corrosion by Sulfur Blocking of the Hydrogen Evolution Reaction on Iron Impuritiescitations
- 2019Influence of post-treatment time of trivalent chromium protection coating on aluminium alloy 2024-T3 on improved corrosion resistancecitations
Places of action
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article
Effects of Chloride Ions on Passive Oxide Films Formed on Cr-Fe-Co-Ni(-Mo) Multi-Principal Element Alloy Surfaces
Abstract
International audience ; The composition and stratification of the passive oxide films formed on three Cr-Fe-Co-Ni(-Mo) multi-principal element alloys by electrochemical anodic passivation in sulfuric acid electrolyte containing 0.2 and 4.7 M NaCl were investigated, combining X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry surface analysis. The passive films show a bilayer structure similar to that formed in Cl −-free electrolyte with an inner layer mostly consisting of Cr oxide and an outer layer containing of Cr hydroxide, Ni hydroxide, Mo oxides, and Fe (hydr)oxide. The Mo-free alloy exhibits a thickening of the inner Cr oxide layer and the thinning of the outer layer in 0.2 M Cl − , whereas the two Mo-containing alloys do not show significant alteration even in 4.7 M Cl − evidencing their higher stability in Cl −-containing solutions. The chloride penetration is limited to the external part of the outer oxide layer, except in the most severe tested conditions where traces reach the inner barrier layer, and the chloride entry into the layer is strongly reduced after pre-passivation in Cl −-free solution. The results allow us to discuss the beneficial effects of pre-passivation in Cl −-free conditions and Mo addition providing these alloys enhanced resistance to passivity breakdown.