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Deposition and characterization of hex-BN coating on carbon fibres using tris(dimethylamino)borane precursor
Affiliation:1. Laboratoire des Composites Thermostructuraux, UMR 5801 CNRS-SAFRAN-CEA-UB1 3, Allée de La Boétie, F-33600 Pessac, France;2. Laboratoire des Multimatériaux et Interfaces, UMR 5615 Université de Lyon 1, CNRS 43, Boulevard du 11 Novembre 1918 F-69622, Villeurbanne Cedex, France;3. Commissariat à l’Energie Atomique, CEA CESTA BP2, F-33114 Le Barp, France;1. Science and Technology of Advanced Functional Composite Laboratory, Aerospace Research Institute of Materials and Processing Technology, Beijing 100076, China;2. Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China;1. School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, China;2. School of Aeronautics and Astronautics, Central South University, Changsha, Hunan 410083, China;3. Hunan Province Key Laboratory of New Specialty Fibers and Composite Material, Central South University, Changsha, Hunan 410083, China;1. Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi’an 710072, PR China;2. Key Laboratory for Advanced Corrosion and Protection of Aviation Materials, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, PR China
Abstract:Boron nitride thin films were deposited on carbon fibres by chemical vapor deposition from the single source precursor tris(dimethylamino)borane (TDMAB). Hydrogen was used as carrier gas and additional nitrogen was supplied in the form of ammonia. The heating of the substrate was performed by Joule effect. Detailed TEM structural and chemical analyses reveal a meso-graphitic structure with a stoichiometric B/N ratio as confirmed by Auger Electron Spectroscopy (AES). A penetration of carbon element from the fibre was observed in the BN layer close to the interface.
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