Modeling the Capillary Pressure for the Migration of the Liquid Phase in Granular Solid–Liquid–Vapor Systems: Application to the Control of the Composition Profile in W-Cu FGM Materials
| Autor: | Jean-Michel Missiaen, Jean-Joël Raharijaona, Francis Delannay |
|---|---|
| Přispěvatelé: | Science et Ingénierie des Matériaux et Procédés (SIMaP ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Université Catholique de Louvain = Catholic University of Louvain (UCL), Science et Ingénierie des Matériaux et Procédés [2016-2019] (SIMaP [2016-2019]), Institut polytechnique de Grenoble - Grenoble Institute of Technology [2007-2019] (Grenoble INP [2007-2019])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Département des Sciences des matériaux et des procédés, Université Catholique de Louvain (UCL), Science et Ingénierie des Matériaux et Procédés ( SIMaP ), Université Joseph Fourier - Grenoble 1 ( UJF ) -Institut polytechnique de Grenoble - Grenoble Institute of Technology ( Grenoble INP ) -Institut National Polytechnique de Grenoble ( INPG ) -Centre National de la Recherche Scientifique ( CNRS ) -Université Grenoble Alpes ( UGA ), Université Catholique de Louvain ( UCL ) |
| Rok vydání: | 2016 |
| Předmět: |
Capillary pressure
Chemical substance Materials science Thermodynamics Sintering 02 engineering and technology 01 natural sciences Vapor System Solid Skeleton 0103 physical sciences Porosity ComputingMilieux_MISCELLANEOUS Interface Energy 010302 applied physics Metallurgy Metals and Alloys [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Liquid Bridge Surface energy Volume (thermodynamics) Mechanics of Materials [ CHIM.MATE ] Chemical Sciences/Material chemistry Particle Particle size Capillary Pressure 0210 nano-technology |
| Zdroj: | Metallurgical and Materials Transactions A Metallurgical and Materials Transactions A, Springer Verlag/ASM International, 2016, 47 (11), pp.5569-5579. ⟨10.1007/s11661-016-3702-5⟩ Metallurgical and Materials Transactions A, Springer Verlag/ASM International, 2016, 47 (11), pp.5569-5579. 〈10.1007/s11661-016-3702-5〉 |
| ISSN: | 1543-1940 1073-5623 |
| Popis: | International audience; A model is developed to compute the capillary pressure for the migration of the liquid phase out or into a uniform solid-liquid-vapor system. The capillary pressure is defined as the reduction of the overall interface energy per volume increment of the transferred fluid phase. The model takes into account the particle size of the solid particle aggregate, the packing configuration (coordination number, porosity), the volume fractions of the different phases, and the values of the interface energies in the system. The model is used for analyzing the stability of the composition profile during processing of W-Cu functionally graded materials combining a composition gradient with a particle size gradient. The migration pressure is computed with the model in two stages: (1) just after the melting of copper, i.e., when sintering and shape accommodation of the W particle aggregate can still be neglected and (2) at high temperature, when the system is close to full density with equilibrium particle shape. The model predicts well the different stages of liquid-phase migration observed experimentally. |
| Databáze: | OpenAIRE |
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