Highly efficient preparation of multi-angle continuous carbon fibre reinforced hydroxyapatite composites by electrostatic splitting method |
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| Affiliation: | 1. Henan Key Laboratory of High Temperature Functional Ceramics, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China;2. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;1. School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan 243032, China;2. School of Chemistry and Resources Engineering, Honghe University, Mengzi 661199, China;3. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, China;4. Institute of Energy, Hefei Comprehensive National Science Center, Hefei 230041, China;5. The State key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;6. Bengbu Institute of Metrology, Anmin Road 100, Economic Development Zone, Bengbu 233017, China;7. College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;1. SIMUMECAMAT Research Group. Universidad de Oviedo. Campus Universitario, 33203 Gijón, Spain;2. Instituto de Cerámica y Vidrio, CSIC. Kelsen 5, 28049 Madrid, Spain;1. CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule France;2. ORANO, Chusclan, France |
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| Abstract: | An electrostatic splitting device was self-designed and manufactured for highly efficient preparation of multi-angle continuous carbon fibre (CF)-reinforced ceramic-based composites and was used to prepare multi-angle continuous CF and nano-hydroxyapatite (nHA)-coated CF reinforced HA composites with improved CF dispersion and content. The compressive strength of sintered 0°/90°] CF reinforced hydroxyapatite (CF/HA) composites is more than two and a half times that of hydroxyapatite and is superior to that of cortical bone (26.42–110.7%). Compared with hydroxyapatite, fracture toughness of 0°/0°], 0°/90°] and ? 45°/+ 45°] CF/HA composites increase by 28.83%, 66.32% and 115.95%, respectively. The strength and fracture toughness (30.2 MPa·m1/2) of ? 45°/+ 45°] CF/HA bioceramics display synchronously improving. Micromechanical property and crack propagation process of the composites were simulated in depth. Based on optimised dispersion and arrangement of CF, the introduction of nHA coating enhances the mechanical properties of nHA-coated CF reinforced HA composites because nHA coating can block the generation and propagation of cracks. |
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| Keywords: | Electrostatic splitting Continuous fibre CF/HA bioceramics Mechanical properties Fracture mechanism |
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