Scalable preparation of graphene reinforced Zirconium diboride composites with strong dynamic response

作者：Zhang, Baoxi^*; Cheng, Laifei; Lu, Yunchao; Zhang, Qiang

来源：Carbon, 2018, 139: 1020-1026.

DOI：10.1016/j.carbon.2018.07.067

• Graphene
• Chemical assembly
• Composites
• Dynamic response

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.

• 出版日期2018-11
• 单位西北工业大学; 中国航发北京航空材料研究院; 上海交通大学