A mortise-tenon joint inspired interface structure design for synergistically enhancing the mechanical properties and thermal shock resistance of Cf/(HfNbTaTiZr)C-SiC compositesOA
Carbon fiber-reinforced high-entropy carbide ceramics(Cf/HECs)are considered promising candidates for ultrahightemperature structural applications.The fiber-matrix interface plays a crucial role in determining the overall performance of these materials.This study proposes a novel interface design strategy inspired by the traditional Chinese mortise-tenon joint.In this design,microscale carbon spheres are deposited on the surface of carbon fibers to function as the“tenon”,while the matrix serves as the corresponding“mortise”.Furthermore,a TiC interfacial layer is introduced to improve the interfacial bonding through atomic diffusion.Owing to this distinctive interface structure,the resulting Cf/(TiZrHfNbTa)C-SiC composite exhibits excellent mechanical properties,with a flexural strength of 1053.33 MPa and a fracture toughness of 9.77 MPa·m^(1/2).Additionally,the composite demonstrates remarkable thermal shock resistance,with a critical thermal shock temperature difference(ΔTc)of 802°C.It also displays superior ablation resistance,characterized by a linear ablation rate of 3.27μm·s^(-1)and a mass ablation rate of 0.05 mg·s^(-1).
Tianzhan Shen;Cuiyan Li;Haibo Ouyang;Mengyao He;Sirui Wu;Leer Bao;Qiaoqiao Wang;Yulei Zhang;Jian Wei
Shaanxi Key Laboratory for Green Manufacturing and Functional Application of Inorganic Materials,School of Materials Science&Engineering,Shaanxi University of Science and Technology,Xi’an 710021,ChinaShaanxi Key Laboratory for Green Manufacturing and Functional Application of Inorganic Materials,School of Materials Science&Engineering,Shaanxi University of Science and Technology,Xi’an 710021,ChinaShaanxi Key Laboratory for Green Manufacturing and Functional Application of Inorganic Materials,School of Materials Science&Engineering,Shaanxi University of Science and Technology,Xi’an 710021,ChinaShaanxi Key Laboratory for Green Manufacturing and Functional Application of Inorganic Materials,School of Materials Science&Engineering,Shaanxi University of Science and Technology,Xi’an 710021,ChinaShaanxi Key Laboratory for Green Manufacturing and Functional Application of Inorganic Materials,School of Materials Science&Engineering,Shaanxi University of Science and Technology,Xi’an 710021,ChinaShaanxi Key Laboratory for Green Manufacturing and Functional Application of Inorganic Materials,School of Materials Science&Engineering,Shaanxi University of Science and Technology,Xi’an 710021,ChinaShaanxi Key Laboratory for Green Manufacturing and Functional Application of Inorganic Materials,School of Materials Science&Engineering,Shaanxi University of Science and Technology,Xi’an 710021,ChinaShaanxi Key Laboratory of Fiber Reinforced Light-Weight Composites,State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an 710072,ChinaCollege of Materials Science and Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China
通用工业技术
high-entropy carbidecarbon fiberinterface designmortise-tenon jointmechanical properties
《Journal of Advanced Ceramics》 2026 (2)
P.63-78,16
supported by the National Natural Science Foundation of China(Nos.52372087 and 52173299)the Natural Science Foundation of Shaanxi Province(No.2025SYSSYSZD-062).
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