| 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
Effect of surface preparation by high-temperature hydrogen annealing on the passivation of Ni-20 at.% Cr alloy in sulfuric acid
Abstract
<p>The effect of high-temperature annealing under hydrogen gas (H<sub>2</sub>) surface preparation on a binary polycrystalline Ni-20 at.% Cr alloy was investigated in comparison with conventional mechanical grinding surface preparation. Duplex surface films with inner Cr(III) oxide and outer Ni(II) and Cr(III) hydroxide layers natively formed before and after H<sub>2</sub> annealing were characterized by X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectroscopy. A thinner and less homogeneous inner barrier layer formed after H<sub>2</sub> annealing caused an oxidation peak at the active/passive transition in the linear sweep voltammetry measurement in a 0.5 M H<sub>2</sub>SO<sub>4</sub> solution. Despite this high oxidation peak, passivation of the H<sub>2</sub> annealed surface resulted in the formation of a more corrosion resistant inner layer than on the mechanically ground surface, as demonstrated by electrochemical impedance spectroscopy. The corrosion resistant passive film formation of the H<sub>2</sub> annealed surface is attributed to the increased Cr enrichment of the inner layer caused by the selective Ni dissolution providing corrosion resistance to the initially weakly protected sites of the natively formed surface film.</p>