Wetting behaviour in the Al-Si/SiC system: interface reactions and solubility effects |
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| Affiliation: | 1. LANSEN, Departamento de Física, Universidade Federal do Paraná, 81531-990, Caixa Postal 19044, Curitiba, Paraná, Brazil;2. BIOPOL, Departamento de Química, Universidade Federal do Paraná, 81531-980, Caixa Postal 19081, Curitiba, Paraná, Brazil;3. Instituto Federal de Educação, Ciência e Tecnologia do Paraná, 81531-990 Curitiba, Paraná, Brazil;4. CNRS, Laboratoire de Photonique et de Nanostructures (LPN), Route de Nozay, 91460 Marcoussis, France;1. College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Yudao Street 29, 210016 Nanjing, People''s Republic of China;2. Institute of Additive Manufacturing (3D Printing), Nanjing University of Aeronautics and Astronautics,Yudao Street 29, 210016 Nanjing, PR China;3. Fraunhofer Institute for Laser Technology ILT/Chair for Laser Technology LLT, RWTH Aachen, Steinbachstraße 15, D-52074 Aachen, Germany;1. State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai 200240, China;2. School of Materials Science & Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai 200240, China;3. Univ. Lille, CNRS, INRA, ENSCL, UMR 8207 - UMET - Unité Matériaux et Transformations, F-59000 Lille, France;4. Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China;1. Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, Xi''an, Shaanxi 710072, China;2. Department of Mechanical Engineering, Khalifa University, 127788 Abu Dhabi, United Arab Emirates;1. Department of Physics, Konkuk University, Seoul 05029, Republic of Korea;2. Functional Ceramics Laboratory, Department of Materials Science and Engineering, The University of Seoul, Seoul 02504, Republic of Korea;3. Energy and Environmental Division, Korea Institute of Ceramic Engineering and Technology, Jinju 52851, Republic of Korea;4. Electronic Materials Convergence Division, Korea Institute of Ceramic Engineering and Technology, Jinju 52851, Republic of Korea;5. SKC Solmics, Pyeongtaek 17784, Republic of Korea |
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| Abstract: | The sessile drop technique was used to study the wetting behaviour of Al-Si alloys on SiC sintered ceramic substrates under vacuum in the 700–1100°C temperature interval. Al-Si alloys with Si concentrations up to 50% were tested. An expected non-wetting/wetting transition was observed at 900–1000°C due to the presence of an alumina film surrounding the molten alloy. At higher temperatures wetting was observed and the Si concentration of the alloy has a marked effect on the measured contact angles, θ. At 1100°C θ decreases from 55° to 25° when instead of pure al and A112.3%Si or an A116.6%Si alloy is used. The suppression of the formation of a continuous Al4C3 layer at the interface and a process of dissolution and reconstruction of the SiC surface, due to the increased Si concentration of the Al-Si alloys, are the key factors to explain the observed behaviour. |
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