Effect of preparation conditions on diamond cluster formation in bulk nanoporous carbon |
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| Affiliation: | 1. Ioffe Physico-Technical Institute, Russian Academy of Sciences, 194021 Politechnicheskaya 26, St. Petersburg, Russia;2. Central Research Institute for Materials, St. Petersburg, Russia;3. University Claude Bernard Lyon1, Villeurbanne Cedex, France;1. Unité de Recherche sur les Hétéro-Epitaxies et Applications, Faculté des Sciences de Monastir 5019, Université de Monastir, Tunisia;2. SATIE, UMR 8029 CNRS-ENS Cachan-Cnam, 292 rue Saint-Martin, 75003 Paris, France;3. CNRS, UMI 2958 Georgia Tech – CNRS, 57070 Metz, France;4. Université de Lorraine, Centrale Supelec, LMOPS, EA4423, 57070 Metz, France;1. Advanced Centre of Research in High Energy Materials, University of Hyderabad, Hyderabad 500 046, India;2. Department of Physics, Faculty of Education, Al-Baida University, Al-Baida 38018, Yemen;1. Directorate of Nanomaterials and Technology, DMSRDE, DRDO, Kanpur, India;2. Defense Institute of Physiology and Allied Sciences, DRDO, New Delhi, India;1. Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming, 650500, China;2. Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, USA;1. Instituto Nacional del Carbón, INCAR-CSIC, Apdo. 73, 33080 Oviedo, Spain;2. REPSOL, Centro de Tecnología, Carretera de Extremadura, km 18, 28935 Mostoles, Madrid, Spain |
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| Abstract: | The structure of bulk nanoporous carbon chemically prepared from SiC powders is studied by TEM microdiffraction and HRTEM techniques. The conditions for the formation of diamond and graphite clusters in the carbonization process are analyzed. The experimental data suggest that diamond clusters can be produced near carbonization reaction front in the case of its quick propagation into the precursor. The slower the reaction front, the greater is the chance that graphite or quasi-graphite clusters are formed. |
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