J. Mater. Sci. Technol. ›› 2025, Vol. 208: 92-103.DOI: 10.1016/j.jmst.2024.04.048

• Research Article • Previous Articles     Next Articles

Fabrication of bamboo-inspired continuous carbon fiber-reinforced SiC composites via dual-material thermally assisted extrusion-based 3D printing

Sai Lia, Haitian Zhanga, Zhongliang Lua,b,*, Fusheng Caoa, Ziyao Wanga, Yan Liua, Xiaohui Zhua, Shuai Ninga, Kai Miaoa, Shaoyu Qiuc,*, Dichen Lia   

  1. aState Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
    bSchool of Intelligent Manufacturing Modern Industry, Xinjiang University, Urumqi 830046, China;
    cScience and Technology on Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu 610213, China
  • Received:2024-01-21 Revised:2024-04-15 Accepted:2024-04-24 Published:2025-02-10 Online:2024-05-11
  • Contact: * State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China. E-mail addresses: zllu@mail.xjtu.edu.cn (Z. Lu), npicqiusy@163.com (S. Qiu).

Abstract: Ceramic matrix composites (CMCs) structural components encounter the dual challenges of severe mechanical conditions and complex electromagnetic environments due to the increasing demand for stealth technology in aerospace field. To address various functional requirements, this study integrates a biomimetic strategy inspired by gradient bamboo vascular bundles with a novel dual-material 3D printing approach. Three distinct bamboo-inspired structural configurations Cf/SiC composites are designed and manufactured, and the effects of these different structural configurations on the CVI process are analyzed. Nanoindentation method is utilized to characterize the relationship between interface bonding strength and mechanical properties. The results reveal that the maximum flexural strength and fracture toughness reach 108.6 ± 5.2 MPa and 16.45±1.52 MPa m1/2, respectively, attributed to the enhanced crack propagation resistance and path caused by the weak fiber-matrix interface. Furthermore, the bio-inspired configuration enhances the dielectric loss and conductivity loss, exhibiting a minimum reflection loss of -24.3 dB with the effective absorption band of 3.89 GHz. This work introduces an innovative biomimetic strategy and 3D printing method for continuous fiber-reinforced ceramic composites, expanding the application of 3D printing technology in the field of CMCs.

Key words: 3D printing, Cf/SiC composites, Mechanical properties, Electromagnetic wave absorption