• 文献标题:   Hierarchical toughening of laminated nanocomposites with three-dimensional graphene/carbon nanotube/SiC nanowire
  • 文献类型:   Article
  • 作  者:   SUN J, ZHAI P, CHEN Y, ZHAO J, HUANG Z
  • 作者关键词:   ceramicmatrix nanocomposite, laminated structure, hybrid g, cnt, sic nw reinforcement, mechanical propertie
  • 出版物名称:   MATERIALS TODAY NANO
  • ISSN:   2588-8420
  • 通讯作者地址:  
  • 被引频次:   7
  • DOI:   10.1016/j.mtnano.2022.100180 EA FEB 2022
  • 出版年:   2022

▎ 摘  要

High-performance reinforcement together with advanced innovative structure design has been attracting much attention as a means of circumventing the conflict between toughness and hardness or strength of ceramic matrix. Herein, we developed the laminated tungsten carbide (WC) matrix composite reinforced by hybrid one-dimensional (1D) carbon nanotubes (CNTs) and SiC nanowire (SiCnw) as well as two-dimensional (2D) graphene (G), with a striking combination of high hardness (25.3 GPa), high fracture toughness (13.7 MPa m1/2), and high strength (1,501.7 MPa), exhibiting superiority in mechanical properties compared with most WC-based materials, such as WC-metal, WC-intermetallic, WC-carbide, WC-oxide, WC-nitride, WC-whisker, WC-CNT, and WC-graphene. The optimum structure was determined as laminate of five symmetrical layers with thickness ratio of golden ratio squared. In addition, the three-dimensional (3D) hybrid G/CNT/SiCnw demonstrated a strong hierarchical lamellar interconnected structure, in which CNT and SiCnw were well sandwiched between G sheets, synergistically facilitating the enhancement in the mechanical properties of the host matrix. This present investigation shows promising future in achieving state-of-the-art multiscale ceramic composites for safety-critical applications as in the transportation and aerospace.