| 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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Mathieu, Stéphane
Laboratoire de Conception Fabrication Commande
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (27/27 displayed)
- 2024Oxidation behavior of platinum-containing γ, γ′ and TROPEA superalloy
- 2022Effect of microstructure and intermetallic precipitates on the electrochemical behavior of dissimilar AA6061-T6/ER5183/AA5086-H32 aluminum TIG weld
- 2021Microstructural Evolution and Electrochemical Behavior of Solution Treated, Hot Rolled and Aged MgDyZnZr Alloy
- 2020A comparison of the high-temperature oxidation behaviour of conventional wrought and laser beam melted Inconel 625citations
- 2020A comparison of the high-temperature oxidation behaviour of conventional wrought and laser beam melted Inconel 625citations
- 2018Correlation Between the Pitting Potential Evolution and σ Phase Precipitation Kinetics in the 2205 Duplex Stainless Steelcitations
- 2017Evaluation of the Compatibility of Aluminide Coatings in High-Temperature Sodium for Fast Reactor Applicationcitations
- 2017The Role of Oxygen Partial Pressure on the Nature of the Oxide Scale on a NiCr Model Alloycitations
- 2015The ability of silicide coating to delay the catastrophic oxidation of vanadium under severe conditionscitations
- 2014Experimental study of the liquid-solid phase equilibria of the V-Cr-Si systemcitations
- 2014Experimental isothermal section at 1200 degrees C of V-Cr-Si systemcitations
- 2014Effect of tin addition on Nb-Si-based in situ composites. Part I: Structural modificationscitations
- 2014Effect of tin addition on Nb-Si-based in situ composites. Part II: Oxidation behaviourcitations
- 2014Effect of boron addition on the oxidation resistance of suicide protective coatings: A focus on boron location in as-coated and oxidised coated niobium alloyscitations
- 2014Towards the improvement of the oxidation resistance of Nb-silicides in situ composites: A solid state diffusion approachcitations
- 2013Development of suicide coatings to ensure the protection of Nb and suicide composites against high temperature oxidationcitations
- 2012Influence of Water Vapour on the Rate of Oxidation of a Ni-25wt.%Cr Alloy at High Temperature
- 2012PACK-CEMENTATION OF CHROMIUM ON Co, Ni AND Fe-BASED CARBIDES-STRENGTHENED ALLOYS: INFLUENCE OF THE CARBIDES NATURE ON THE Cr-ENRICHMENT
- 2011Development of Chromium and Aluminum Coatings on Superalloys by Pack-Cementation Techniquecitations
- 2011Protection of cobalt-based refractory alloys by chromium deposition on surface. Part I: Sub-surface enrichment in chromium by packcementationand diffusioncitations
- 2011Protection of cobalt-based refractory alloys by chromium deposition on surface. Part II: Behaviour of the coated alloys in oxidation at high temperaturecitations
- 2011Protection of cobalt-based refractory alloys by chromium deposition on surface. Part I: Sub-surface enrichment in chromium by packcementation and diffusioncitations
- 2007Thixoforming of Steel: New Tools Conception to Analyse Thermal Exchanges and Strain Rate Effectscitations
- 2007Thixoforming of Steel: New Tools Conception to Analyse Thermal Exchanges and Strain Rate Effectscitations
- 2004State of the Sub-surface Microstructure of Carbides strengthened cast Superalloys after High Temperature Oxidation - Use of Thermodynamic Modelling for a better Understanding
- 2003Using thermodynamical modelisation to predict the evolution of Co-base superalloys’ microstructures at high temperature
- 2001Corrosion et protection de l'alliage de magnésium AZ91 élaboré selon différentes voies, et caractérisation électrochimique des différentes phases constitutives
Places of action
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article
Protection of cobalt-based refractory alloys by chromium deposition on surface. Part I: Sub-surface enrichment in chromium by packcementation and diffusion
Abstract
The feasibility of surface chromium enrichment by pack-cementation was assessed for different low chromium-containing cobalt alloys, in order to improve their resistance against high temperature. A binary Co-10Cr alloy, two ternary Co-10Cr-0.5C and Co-10Cr-1.0C alloys and two TaC-containing Co-10Cr-based alloys were elaborated by foundry for the study. 7.5h-long and 15h-long cementations at 1050°C, followed or not by a 75h-long heat treatment at 1200°C were performed on these alloys. Microstructure examinations performed using a Scanning Electron Microscope and concentration profiles using Electron Probe Micro Analysis-Wavelength Dispersion Spectrometry were realized in order to analyze the level of Cr-enrichment of the sub-surface region, with as studied criteria: the nature of the external Cr-enriched zone, the maximal chromium content on surface and the depth of chromium enrichment. The Cr-enrichment of the sub-surface succeeded for the Co-10Cr alloy and for the two tantalum-containing alloys, with the formation of an external metallic zone containing around 30wt.%Cr. In contrast the chromium carbides-containing alloys were effectively enriched in chromium in surface but in the form of a continuous chromium carbide layer which can induce other problems such as spallation and then possible fast oxidation of the denuded alloy. Finally it appeared that only the carbon-free alloys, and the alloys reinforced by carbides more stable than chromium carbides, are potentially able to be successful enriched in chromium in their sub-surface by pack-cementation.