Helium irradiation induced microstructural damages and mechanical response of Al2O3-ZrO2-SiC composites |
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| Affiliation: | 1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China;2. School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China;1. Department of Mechanical Engineering, Henan University of Engineering, Zhengzhou 451191, China;2. Department of Environmental and Biological Engineering, Henan University of Engineering, Zhengzhou 451191, China;3. Department of Civil Engineering, Henan University of Engineering, Zhengzhou 451191, China;1. Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong Special Administrative Region;2. Université Paris-Saclay, CentraleSupélec, CNRS, Laboratoire de Génie Electrique et Electronique de Paris, 91192 Gif-sur-Yvette, France;3. Sorbonne Université, CNRS, Laboratoire de Génie Electrique et Electronique de Paris, 75252 Paris, France;4. Advanced Photon Source, Argonne National Laboratory, Argonne, IL, United States;1. Dispersive Solids Group, Department of Materials and Earth Sciences, Technical University of Darmstadt, 64287, Germany;2. Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, 64287 Darmstadt, Germany;3. Advanced Electron Microscopy Division, Department of Materials and Earth Sciences, Technical University of Darmstadt, 64287 Darmstadt, Germany;4. College of Materials, Key Laboratory of High Performance Ceramic Fibers, Xiamen University, Ministry of Education, Xiamen, China;5. College of Materials, Xiamen Key Laboratory of Electronic Ceramic Materials and Devices, Xiamen University, Xiamen, China;6. Fraunhofer IWKS, Department Digitalization of Resources, Brentanostr. 2a, 63755 Alzenau, Germany;1. School of Rare Earths, University of Science and Technology of China, Hefei 230026, China;2. Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China;3. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China;1. School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China;2. Beijing Key Laboratory of Pollutant Monitoring and Control in Thermoelectric Production Process, North China Electric Power University, Beijing 102206, China;3. National Institute of Energy Development Strategy, North China Electric Power University, Beijing 102266, China;1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;2. College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China;3. Lanzhou Institute of Physics, Lanzhou 730000, China;4. Institute of Science and Technology of 404 Company Limited, China National Nuclear Corporation, Jiayuguan 735100, China |
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| Abstract: | Ceramic composites are promising candidates as structural materials for future fission and fusion reactors. In present work, Al2O3-ZrO2-SiC ternary ceramic composites were irradiated with 2.0 MeV He-ions at 300 and 800 ℃. Grazing incidence X-ray diffraction results confirmed that there was irradiation induced shift and broadening of diffraction peaks, but no amorphization of Al2O3-ZrO2-SiC composite were observed up to fluence of 1.72 × 1018 ions/cm2. Transmission electron microscopy observations showed that throughout the entire irradiation region, nano-sized helium bubbles are mostly distributed in Al2O3 grains and partly in ZrO2 grains, while no detectable bubbles are observed in SiC grains. No obvious agglomeration of bubbles was found at grain/phase boundaries. By using nanoindentation technique, slight hardening or softening was confirmed for the samples irradiated at 300 and 800 ℃ respectively. The absence of amorphization and surface exfoliation indicating the Al2O3-ZrO2-SiC composite exhibits remarkable resistance to He-ions irradiation. |
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| Keywords: | Ceramic composite Ion irradiation Helium bubbles Irradiation damage |
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