Enhanced mechanical properties in Cf/LAS composite with yolk-shell structure interface. Issue 14 (November 2022)

• Record Type: Journal Article
• Authors: Ma, Shishuai; Wang, Chi; Li, Heqi; Li, Tian-tian; Geng, Yongsheng; Ren, He; Xia, Long; Yang, Hua; Zhong, Bo; Xiong, Li; Huang, Xiaoxiao; Wen, Guangwu
• Is Part Of: Journal of the European Ceramic Society. Volume 42:Issue 14(2022)
• Page Start: 6457
• Page End: 6465
• Publication Date: 2022-11
• Subjects: Mechanical properties -- Graphite layer -- Interface -- Yolk-shell structure -- Cf/LAS; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2022.07.032
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: A new approach to improve the interfacial matching of carbon fiber-reinforced lithium-aluminum-silicon(Cf /LAS) composites is proposed, which is achieved by Ni nanoparticles catalyzing the formation of a tunable graphite layer on the surface of Cf . The interfacial structure between the composites can be effectively improved by tuning parameters such as Ni 2+ content and sintering holding time, and ultimately, the mechanical properties of the composites can be improved. Interestingly, due to the introduction of Ni 2+, a yolk-shell type graphite layer is formed between the Cf and LAS, and the bridging effect of the graphite layer improves interfacial bonding. The highest flexural strength (515 ± 30 MPa) and fracture toughness (14.7 ± 1.6 MPa·m 1/2 ) were obtained. Taking Cf /LAS as an example, the relationship between interfacial matching and mechanical properties of composites is systematically investigated and may provide a new idea for the improvement of mechanical properties of fiber-reinforced composites.