• 文献标题:   Scalable preparation of graphene reinforced Zirconium diboride composites with strong dynamic response
  • 文献类型:   Article
  • 作  者:   ZHANG BX, CHENG LF, LU YC, ZHANG Q
  • 作者关键词:   graphene, chemical assembly, composite, dynamic response
  • 出版物名称:   CARBON
  • ISSN:   0008-6223 EI 1873-3891
  • 通讯作者地址:   Northwestern Polytech Univ
  • 被引频次:   4
  • DOI:   10.1016/j.carbon.2018.07.067
  • 出版年:   2018

▎ 摘  要

An imperative bottleneck of ceramic materials with weak dynamic response, associating with rigid co-valent or ionic bonds, has restricted its extensively applications. Despite traditional reinforcements of carbon fibers or whiskers improved their dynamic response, it was still limited to a threshold owing to their heterogeneous dispersion and structural damage. Graphene has been regarded as an alternative reinforcement due to its excellent in-plane mechanical property. Here we developed a scalable process of chemical assembly to fabricate ZrB2-SiC/graphene composites. Graphene offered a shielding effect to arrest crack propagation, and ultimately restrained fracture and fragmentation of composites. Compared with pristine ZrB2-SiC composites, the dynamic strain of ZrB2-SiC/graphene composites (5.2 vol %) depicted a 138% increasing (from 0.095 to 0.226%), and their dynamic stress exhibited a 28% increasing (from 1.50 to 1.92 GPa). This work offers a paradigm for preparing graphene reinforced ceramic composites with strong dynamic response. (C) 2018 Elsevier Ltd. All rights reserved.