摘要
采用微波烧结技术制备了石墨烯复合氧化锆陶瓷,研究了石墨烯增强增韧氧化锆陶瓷的机理。采用X射线衍射仪(XRD)、扫描电镜、能谱仪、维氏硬度计和万能试验机等研究了石墨烯复合对氧化锆陶瓷组织结构以及力学性能的影响。结果表明:石墨烯添加后,氧化锆中单斜相的比例会提高45%;石墨烯能阻碍晶粒的聚晶长大,提高致密性,从而提高石墨烯复合氧化锆陶瓷的断裂韧性及强度。
Graphene composite zirconia ceramics were prepared by microwave sintering technology, and the mechanism of graphene reinforced and toughened zirconia ceramics was studied.The effects of graphene composite on microstructure and mechanical properties of the zirconia ceramics were studied by means of X-ray diffractometer (XRD ), scanning electron microscopy, energy dispersive spectrometer analysis, Vickers hardness tester and universal testing machine.The results show that the proportion of monoclinic phase in the zirconia increases by 45% after graphene is added, and graphene can hinder the growth of polycrystalline grains and improve the compactness of the graphene composite zirconia ceramics, thus improving the fracture toughness and strength of the graphene composite zirconia ceramics.
作者
赵宇航
周根树
王利斌
季璐
ZHAO Yu-hang;ZHOU Gen-shu;WANG Li-bin;JI Lu(State Key Laboratory of Metallic Materials Strength, School of Materials, XiJ an Jiaotong University, Xi'an 710049, China;Ruihong (Shanghai) New Materials Technology Co Ltd, Shanghai 201315, China)
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2019年第9期8-13,共6页
Transactions of Materials and Heat Treatment
基金
西安市科技创新计划(201805064ZD15CG48)
关键词
氧化锆陶瓷
石墨烯
断裂韧性
微波烧结
zirconia ceramics
graphene
fracture toughness
microwave sintering
