| 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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Grégoire, Benjamin
University of Birmingham
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2023Resistance of slurry aluminide coatings on pure nickel under different sulphidizing/Hot corrosion conditions at 700 °Ccitations
- 2023Effect of chromium and silicon additions on the hot corrosion resistance of nickel aluminide coatingscitations
- 2021Improving the corrosion resistance of ferritic-martensitic steels at 600 °C in molten solar salt via diffusion coatingscitations
- 2021Corrosion performance of slurry aluminide coatings in molten NaCl–KClcitations
- 2020Corrosion mechanisms of ferritic-martensitic P91 steel and Inconel 600 nickel-based alloy in molten chlorides. Part I: NaCl–KCl binary systemcitations
- 2020Long-term corrosion behavior of Cr diffusion coatings on ferritic-martensitic superheater tube material X20CrMoV12-1 under conditions mimicking biomass (co-)firingcitations
- 2020High Temperature Oxidation of Slurry Aluminized Deformable Austempered Ductile Iron (DADI)citations
- 2019Development of a new slurry coating design for the surface protection of gas turbine componentscitations
- 2019Mechanisms of formation of slurry aluminide coatings from Al and Cr microparticlescitations
- 2019Correlations between the kinetics and the mechanisms of hot corrosion of pure nickel at 700 °Ccitations
- 2019Dissolution and passivation of aluminide coatings on model and Ni-based superalloycitations
- 2019Scale Formation and Degradation of Diffusion Coatings Deposited on 9% Cr Steel in Molten Solar Saltcitations
- 2018Mechanisms of hot corrosion of pure nickel at 700°C: Influence of testing conditionscitations
- 2017Oxidation performance of repaired aluminide coatings on austenitic steel substratescitations
- 2017Reactivity of Al-Cr microparticles for aluminizing purposescitations
- 2016Influence of the oxide scale features on the electrochemical descaling and stripping of aluminide coatingscitations
Places of action
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article
Influence of the oxide scale features on the electrochemical descaling and stripping of aluminide coatings
Abstract
Turbine components are subjected to very aggressive environments at high temperatures leading to corrosion and/or oxidation. Because of their high cost, they have to be repaired instead of being replaced. Prior to refurbishment and recoating, the components have to be fully stripped to remove the oxide products and defective coatings. In this work, an electrochemical stripping method is studied. Cathodic polarization induced the hydrogen evolution reaction (HER) to remove the scales while switching to anodic polarization dissolved the aluminide coating underneath. The influence of oxides on this method is investigated. The effect of grit blasting steps on the dissolution reactions was also evaluated. It will be shown that the most effective stripping can be performed in presence of non-continuous oxides, such as spinel NiAl2O4, rather than compact oxides such as α-alumina. In the latter, a prior grit blasting step allows activation of the sample surface. The dissolution mechanisms of the coatings are finally discussed after the solution was able to go through the oxide scales.