| 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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Missiaen, Jean-Michel
Université Grenoble Alpes
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2024Additive manufacturing of aluminum Al 6061 alloy using metal injection molding granules : green density, surface roughness, and tomography study
- 2024Interface migration and grain growth in NbC-Ni cemented carbides with secondary carbide additioncitations
- 2024Additive manufacturing of aluminum Al 6061 alloy using metal injection molding granules: green density, surface roughness, and tomography study
- 2022Neutron diffraction characterizations of NbC-Ni cemented carbides thermal residual stressescitations
- 2022Sintering behavior, microstructure and mechanical properties of NbC-Ni alloys with different carbon contentscitations
- 2021Cooperative grain boundary and phase boundary migration for the grain growth in NbC-based cemented carbidescitations
- 2021Copper additive manufacturing using MIM feedstock: adjustment of printing, debinding, and sintering parameters for processing dense and defectless partscitations
- 2021Copper extrusion 3D printing using metal injection moulding feedstock: Analysis of process parameters for green density and surface roughness optimizationcitations
- 2021Shrinkage and microstructure evolution during sintering of cemented carbides with alternative binderscitations
- 2021Grain growth in sintering: a discrete element model on large packingscitations
- 2021Additive manufacturing of 17–4 PH steel using metal injection molding feedstock: Analysis of 3D extrusion printing, debinding and sinteringcitations
- 2020Sintering behavior and microstructural evolution of NbC-Ni cemented carbides with Mo2C additionscitations
- 2020Sintering behavior and microstructural evolution of NbC-Ni cemented carbides with Mo2C additionscitations
- 2019Experimental study of asymmetrical tilt boundaries in WC-Co alloyscitations
- 2019Recent Progress in the Characterisation of Cemented Carbides at the Nanoscale by TEM
- 2017EBSD study to analyse mechanisms of phase boundary and grain boundary development in WC-Co cemented carbidescitations
- 2017Investigation on the chemical reactions affecting the sinterability and oxide content of Cu–Cr composites during the solid state sintering processcitations
- 2015A New Closed-Form Model for Solid-State Sintering Kineticscitations
- 20083D statistical analysis of a copper powder sintering observed in situ by synchrotron microtomographycitations
- 20083D statistical analysis of a copper powder sintering observed in situ by synchrotron microtomographycitations
- 2001Compression and Sintering of Powder Mixtures: Experiments and Modelling
Places of action
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article
A New Closed-Form Model for Solid-State Sintering Kinetics
Abstract
The aim of this work was to revisit the two-sphere model of solid-state sintering kinetics to make it consistent with the morphological evolution of the particle contacts during most of the sintering process. Mass transport equations for solid-state sintering are written in a closed-form. The usual simplifications of tangent or secant spheres are avoided and the true evolution of the neck geometry is taken into account, depending on the relative weight of densifying / nondensifying mechanisms. Finite difference methods are used to compute the evolution of geometrical parameters and of the shrinkage rate as a function of time and temperature. The model combines the usual mechanisms of volume, surface, and grain-boundary diffusion as well as vapor transport. The ratio of concave to convex surfaces is deduced from neck growth and from the packing coordination number. A smooth transition from the classical first stage to the intermediate stage of sintering, where curvature gradients have vanished at the particle surface, is obtained. The same model can then be applied to describe sintering kinetics until pore closure. This model providing a realistic evolution of the contact morphology makes it possible to analyze the competition between densifying and nondensifying mechanisms throughout the early and intermediate stages of sintering. The competition between lattice diffusion and vapor transport or surface diffusion is thus analyzed.