| 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
Corrosion mechanisms of ferritic-martensitic P91 steel and Inconel 600 nickel-based alloy in molten chlorides. Part I: NaCl–KCl binary system
Abstract
With suitable thermophysical properties and commercial viability, molten chlorides are promising candidates to replace nitrate salts as heat transfer fluids (HTF) and thermal energy storage (TES) materials for next-generation concentrated solar power (CSP) plants. Nevertheless, structural materials including steels and nickel-based alloys experience severe corrosion in molten chlorides. The explicit understanding of the corrosion mechanisms is therefore decisive in order to propose viable technical solutions to increase the durability of these materials. In this work, the corrosion behavior of ferritic-martensitic P91 steel and Inconel 600 nickel-based alloy is investigated in molten NaCl–KCl at 700 °C under Ar. The salt mixtures after exposure as well as the corroded samples were simultaneously characterized. The systematic metallographic study after the water-free preparation indicates that electrochemical processes play a major role in the overall corrosion mechanisms. In both P91 steel and Inconel 600, the formation of micro-galvanic pairs between Cr-rich phases (anodic sites) and the alloy matrix (cathode) leads to the selective dissolution of Cr from the alloys resulting in the formation of subsurface voids. The influence of O2 and of various alloying elements on the corrosion kinetics is discussed. Based on the experimental observations, several corrosion mechanisms combining electrochemical reactions, solid-state diffusion and chloridation-oxidation processes have to be taken into account.