Continuous carbon fiber reinforced ZrB2-SiC composites fabricated by direct ink writing combined with low-temperature hot-pressing. Issue 9 (August 2022)

• Record Type: Journal Article
• Authors: Liu, Yaxiong; Cheng, Yehong; Ma, Denghao; Hu, Ning; Han, Wenbo; Liu, Dazhao; Wu, Shuai; An, Yumin; Wang, Anzhe
• Is Part Of: Journal of the European Ceramic Society. Volume 42:Issue 9(2022)
• Page Start: 3699
• Page End: 3707
• Publication Date: 2022-08
• Subjects: Continuous carbon fiber -- Ceramic matrix composite -- Direct ink writing -- Hot-pressing; 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.2022.03.045
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: As one of additive manufacturing techniques, direct ink writing has significant advantages in the manufacture of ceramic matrix composites, nevertheless, the poor impregnability of ceramic slurry makes it difficult to fill the interior of fiber bundles, causing poor mechanical properties. Here, ultrasound-assisted fiber separation technique was introduced to impregnate ceramic slurry with a continuous carbon fiber bundle during direct ink writing of continuous carbon fiber/ceramic green body and subsequent low temperature hot-pressing was combined to improve its robustness. Suitable thickness of carbon coating could bring to high fracture resistance, whereas excessively thick carbon coating will adversely affect the mechanical properties. A carbon interface with thickness around 110 nm was incorporated, the flexural strength, fracture toughness and work of fracture of Cf /ZrB2 -SiC composite reached 388.3 MPa, 10.04 MPa·m 1/2 and 2380 J/m 2, respectively. Therefore, direct ink writing combined with low temperature hot-pressing, was effective to fabricate high-performance ceramic matrix composites.