High temperature interfacial phase stability of a Mo/Ti3SiC2 laminated composite |
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| Affiliation: | 1. Guangdong Welding Institute (China-Ukraine E. O. Paton Institute of Welding), Guangzhou 510650, PR China;2. National Engineering Research Center of Near-Net-Shape Forming Technology for Metallic Materials, South China University of Technology, Guangzhou 510640, PR China;3. College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, PR China;1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi''an, 710072, China;2. Shaanxi Key Laboratory of Friciton Welding Technologies, Xi''an, 710072, China;1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China;2. National Key Laboratory of Science and Technology on Materials under Shock and Impact, Beijing 100081, PR China;1. School of National Defence Science and Technology, Southwest University of Science and Technology, Mianyang 621010, China;2. Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China;3. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China;4. Department of Electrical and Information Engineering, Southwest University for Nationalities, Chengdu 610041, China |
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| Abstract: | A Mo/Ti3SiC2 laminated composite is prepared by spark plasma sintering at 1300 °C under a pressure of 50 MPa. Al powder is used as sintering aid to assist the formation of Ti3SiC2. The fabricated composites were annealed at 800, 1000 and 1150 °C under vacuum for 5, 10, 20 and 40 h to study the composite's interfacial phase stability at high temperature. Three interfacial layers, namely Mo2C layer, AlMoSi layer and Ti5Si3 solid solution layer are formed during sintering. Experimental results show that the Mo/Ti3SiC2 layered composite prepared in this study has good interfacial phase stability up to at least 1000 °C and the growth of the interfacial layer does not show strong dependence on annealing time. However, after being exposed to 1150 °C for 10 h, cracks formed at the interface. |
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| Keywords: | Mo/Ti3SiC2 Laminated composite Spark plasma sintering(SPS) Powder metallurgy Interfacial phase stability |
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