Domain coarsening in viscous sintering as a result of topological pore evolution |
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| Affiliation: | 1. Research Center for Structural Materials, National Institute for Materials Science (NIMS), Ibaraki, 305-0047, Japan;2. Laboratory for Materials and Structures Laboratory, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 226-8503, Japan;3. Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1, Kamitomioka, Nagaoka, Niigata 94-2188, Japan;1. State Key Laboratory of Automotive Simulation and Control, Jilin University, PR China;2. Key Laboratory of Automobile Materials (Ministry of Education), School of Materials Science and Engineering, Jilin University, No. 5988 Renmin Street, Changchun, 130022, PR China;1. Bayreuth Engine Research Center (BERC), Department of Functional Materials, University of Bayreuth, 95440 Bayreuth, Germany;2. Institute of Energy Research and Physical Technologies, Clausthal University of Technology, 38640 Goslar, Germany;1. CEA Tech Nouvelle Aquitaine, C?ur Bersol Bâtiment B, 28 Avenue Gustave Eiffel, 33600 Pessac, France;2. Center for Technology Transfers in Ceramics, Parc Ester Technopole, 7 rue Soyouz, 87068 Limoges, France;3. Univ. Bordeaux, CNRS, LOMA, UMR 5798, F-33400 Talence, France;1. M&I Materials, Hibernia Way, Trafford Park, Stretford, Manchester, M32 0ZD, UK;2. Department of Materials, University of Manchester, Oxford Road, Manchester, M13 9PL, UK |
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| Abstract: | The microstructure evolution in 3D was studied by X-ray microtomography to reveal the relation between topology of pore networks and characteristic length in viscous sintering. The mean intercept length was defined from solid/pore interface for characterizing the length of solid phase and pore phase. The increase of the characteristic length with densification was termed as domain coarsening. The topological pore evolution was analyzed by using genus. The characteristic length increased with decreasing genus in the intermediate stage. The domain coarsening takes place as a natural consequence of pore evolution in viscous sintering, i.e., the decrease of total surface area concurrent with the topological transformations. |
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| Keywords: | X-ray microtomography Topology Coarsening Viscous sintering |
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