Microstructure and mechanical properties of SiC-SiC joints joined by spark plasma sintering |
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| Affiliation: | 1. School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;2. School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;1. Engineering Laboratory of Specialty Fibers and Nuclear Energy Materials (FiNE), Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China;2. School of Materials Science and Engineering, Yeungnam University, Gyeongsan, Republic of Korea;1. School of Engineering & Materials Science and Nanoforce Technology Ltd., Queen Mary University of London, Mile End Road, London E1 4NS, UK;2. Institute of Physics of Materials, Academy of Sciences of the Czech Republic, 616 62 Brno, Czech Republic;3. Department of Applied Science and Technology, Institute of Materials Physics and Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy;4. Ningbo Institute of Materials Technology and Engineering (NIMTE), Chinese Academy of Sciences (CAS), Ningbo 315201, China;5. Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831-6138, USA;1. Advanced Carbon Technology Center, Toyo Tanso Co., Ltd., 5-7-12 Takeshima, Nishiyodogawa-ku, Osaka 555-0011, Japan;2. Joining and Welding Research Institute, Osaka University, 11-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan;1. Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831, United States;2. Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan;3. Pacific Northwest National Laboratory, 902 Battelle Blvd., Richland, WA 99352, United States;4. Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy |
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| Abstract: | The development of reliable joining technology is of great importance for the full use of SiC. Ti3SiC2, which is used as a filler material for SiC joining, can meet the demands of neutron environment applications and can alleviate residual stress during the joining process. In this work, SiC was joined using different powders (Ti3SiC2 and 3Ti/1.2Si/2C/0.2Al) as filler materials and spark plasma sintering (SPS). The influence of the joining temperature on the flexural strength of the SiC joints at room temperature and at high temperatures was investigated. Based on X-ray diffraction and scanning electron microscopy analyses, SiC joints with 3Ti/1.2Si/2C/0.2Al powder as the filler material possess high flexural strengths of 133 MPa and 119 MPa at room temperature and at 1200 °C, respectively. The superior flexural strength of the SiC joint at 1200 °C is attributed to the phase transformation of TiO2 from anatase to rutile. |
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| Keywords: | SiC ceramic Spark plasma sintering Ceramic joining |
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