| 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
Mechanisms of formation of slurry aluminide coatings from Al and Cr microparticles
Abstract
The mechanisms of formation of nickel aluminide coatings from alternate deposition of Al and Cr microparticles and subsequent heat treatment in Ar were studied on pure nickel. For this purpose, tailored amounts of Al and Cr water-based slurries were successively deposited on pure nickel following two different architectures (Al/Cr and Cr/Al double-layer systems). Regardless of the coating architecture, the addition of Cr microparticles was found to decrease the thermodynamic activity of Al upon aluminizing through the formation of AlxCry phases. This considerably limited the inward diffusion of Al towards the substrate at low temperature (e.g. 650 °C). Whereas the formation of δ-Ni2Al3 was still observed with the Al/Cr double-layer system, its formation was completely suppressed with the Cr/Al one. By adjusting the composition of the deposited layers, i.e. the thickness of both Cr and Al layers, it was possible to directly form the β-NiAl phase with a further annealing at high temperature (e.g. 1000 °C for 3 h). This fostered the outward diffusion of nickel and the dissolution of synthesized AlxCry phases. Undissolved Cr-rich phases were also observed in the diffusion layers, which confirmed the outward growth of the coating typical of low-activity aluminizing.