Fabrication of SiC whisker-reinforced SiC ceramic matrix composites based on 3D printing and chemical vapor infiltration technology |
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| Affiliation: | 1. State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China;2. Lightweight Optics and Advanced Materials Technology Center, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdum, 610200, China;1. Department of Mechanical Engineering & Mechanics, Lehigh University, Bethlehem, PA 18015, USA;2. BioEngineering Program, Lehigh University, Bethlehem, PA 18015, USA;1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, Human Province, China;2. School of Materials Science and Engineering, Central South University, Changsha 410083, Human Province, China;1. State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;2. Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore |
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| Abstract: | Spray drying, binder jetting and chemical vapor infiltration (CVI) were used in combination for the first time to fabricate SiC whisker-reinforced SiC ceramic matrix composites (SiCW/SiC). Granulated needle-shaped SiCW was spray dried into SiCW spherical particles to increase flowability and thereby increase printability. Then, binder jetting was employed to print a novel SiCW preform with two-stage pores using the SiCW spherical particles. The subsequent CVI technology produced pure, dense, and continuous SiC matrix with high modulus and strength. Consequently, SiCW/SiC with appropriate mechanical properties was obtained. Finally, the challenges of the novel method and the ways to improve the mechanical properties of SiCW/SiC are discussed. |
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| Keywords: | SiC whisker-reinforced SiC composites Spray drying Binder jetting Chemical vapor infiltration |
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