Novel SiC/C composite targets for the production of radioisotopes for nuclear applications |
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| Affiliation: | 1. CNR-ISTEC, Inst. of Science and Technology for Ceramics, Via Granarolo 64, 48018 Faenza, Italy;2. INFN – Laboratori Nazionali di Legnaro, Viale dell’Università 2, 35020 Legnaro, Italy;3. Department of Industrial Engineering, University of Padova, Via Venezia 1, 35131 Padova, Italy;1. Federal University of São Carlos, Graduate Program in Materials Science and Engineering (PPGCEM), 13565-905 São Carlos, SP, Brazil;2. Federal University of São Carlos (UFSCar), Department of Materials Engineering (DEMa), 13565-905 São Carlos, SP, Brazil;3. Université Paris-Saclay, CentraleSupélec, ENS Paris-Saclay, CNRS, LMPS – Laboratoire de Mécanique Paris-Saclay, 91190 Gif-sur-Yvette, France;1. State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;2. Centre of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Science, Beijing 100049, China;3. Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russian Federation;4. Nanjing Tech University, Nanjing 211816, China;1. School of Materials Science and Engineering, Harbin Institute of Technology (Weihai), Weihai 264209, PR China;2. School of Science, Lanzhou University of Technology, Lanzhou 730050, PR China;3. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China;4. School of Materials Science and Engineering, Shandong University of Technology, Zibo 255049, Shandong, PR China;1. Department of Physics, Faculty of Sciences and Letters, Çukurova University, 01330 Adana, Turkey;2. INMA (CSIC-Universidad de Zaragoza), Maria de Luna, 50018 Zaragoza, Spain;1. Department of Aerospace Engineering, the Pennsylvania State University, University Park, PA16802, USA;2. NASA Glenn Research Center, Cleveland, OH 44135, USA;3. Applied Research Laboratory, the Pennsylvania State University, University Park, PA 16802, USA |
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| Abstract: | A partially porous SiC ceramic, reinforced with 30 vol% short carbon fibers, was hot pressed and characterized as potential ISOL target for nuclear applications. Powder milling and hot pressing were effective for the realization of a ceramic with about 40% interconnected porosity in the 0.6–0.8 µm size range. A fiber-free porous SiC material was also synthesized for the sake of comparison. Compression strength of the fiber-rich SiC passed from about 200 MPa at room temperature to about 120 MPa upon testing at 1200 °C. The thermal conductivity was higher than the fiber-free SiC and other state-of-art ISOL target materials and was 48 W/m·K at 600 °C and decreased to 17 W/m·K at 1400 °C, owing to the porosity. Remarkably, this fiber-rich ceramic in form of thin disk, possessed suitable thermo-mechanical behavior to successfully withstand a 350 °C thermal gradient without failure. |
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| Keywords: | SiC Hot pressing Composites Carbides Fibers Thermal conductivity |
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