Effects of multilayer hydrothermal carbon interphases on mechanical properties and thermal shock resistance of CF/ZrB2-SiCBN |
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| Affiliation: | 1. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, PR China;2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China;3. National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150080, PR China;4. School of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, PR China;1. School of Mechanical, Electrical & Information Engineering, Shandong University (Weihai), Weihai 264209, PR China;2. Key Laboratory of High Ef?ciency and Clean Mechanical Manufacture of MOE, School of Mechanical Engineering, Shandong University, Jinan 250061, PR China;3. State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi''an Jiaotong University, Xi''an 710049, PR China;1. WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2–1-1 Katahira, Aoba-ku, Sendai 980–8577, Japan;2. National Institute for Materials Science, 1–2-1 Sengen, Tsukuba, Ibaraki 305–0047, Japan;3. Department of Materials Science and Engineering, Tohoku University, 6–6-02 Aramaki Aza Aoba, Sendai 980–8579, Japan;1. School of Materials Science and Engineering, Xi''an University of Technology, Xi’an, Shaanxi 710048, China;2. Advanced Material Analysis and Test Center, Xi’an University of Technology, Xi’an, Shaanxi 710048, China;1. School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China;2. College of Materials Science and Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi 710054, China;1. School of Metallurgy, Northeastern University, No. 3-11, Wenhua Road, Heping District, Shenyang, Liaoning 110819, PR China;2. Department of Materials Science and Engineering, and Research Institute of Advanced Materials (RIAM), Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, South Korea;1. College of Materials Science and Engineering, Nanjing University of Aeronautics and Astronautics, 211106 Nanjing, China;2. Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, Nanjing Institute of Technology, China;3. Fracture and Reliability Research Institute, Tohoku University, Sendai 980–8579, Japan;4. Institute for Materials Research, Tohoku University, Sendai 980–8577, Japan;5. Key Laboratory of Aero-engine Thermal Environment and Structure, Ministry of Industry and Information Technology, Jiangsu Province Key Laboratory of Aerospace Power System,College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China |
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| Abstract: | Multilayer hydrothermal carbon coatings (HTCCs) with various thicknesses were constructed on CFs using alternating hydrothermal carbonization and heat treatment approach. Well-established CF/ZrB2-SiCBN composites with distinct multilayer interphases were processed via slurry injection and precursor infiltration pyrolysis method. The multilayer HTCCs with suitable thickness would be pulled-out stepwise from the matrix, which could absorb the impact energy and toughen the composites effectively. Although the outer HTCC would still react with the matrix to form a strong interface, the moderate interfacial binding force between CF and inner HTCC could effectively transfer the load and assure the fiber debonding when the composites deformed drastically. Moreover, the increasing of coating thickness could alleviate the damage of fibers in oxidation environment and improve the critical thermal shock temperature difference of composites, while the excessive thick coating would weaken the fiber strength and limit toughening abilities of the CFs. |
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| Keywords: | Hydrothermal carbon coating Multilayer interphases Stepwise pull-out Interface designation |
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