摘要
以Al_2O_3为原料,采用水热反应,通过基于静电引力的自组装机制,制备Al_2O_3/石墨烯e(GS)复合粉体。通过Fourier变换红外光谱、X射线衍射、扫描电子显微镜和透射电子显微镜等对Al_2O_3/GS复合粉体的物相组成和显微结构进行表征。采用热压烧结技术制备了Al_2O_3/GS复合陶瓷。研究了不同含量GS对复合材料性能的影响,测试了材料的室温力学性能。结果表明,当GS在Al_2O_3/GS复合粉体中的质量分数为0.75%时,复合陶瓷具有最高的抗弯强度和断裂韧性,其值分别为460.8 MPa和7.9 MPa·m^(1/2)。
Al2O3/Graphene（Al2O3/GS） composite powders were synthesized by a simple hydrothermal method with AI2O3 as a precursor. This process was based on the electrostatic self-assembly mechanism. This process was based on the electrostatic self-assembly mechanism. The phase composition and microstructure of A12O3/GS composite powders were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electronic microscopy and transmission electron microscopy, respectively A12O3/GS composite ceramic materials were prepared by a hot-press sintering technology. The influence of GS content on the properties of AI2O3/GS was investigated. In addition, the mechanical properties of A12O3/GS composite ceramic materials were also measured by an electronic universal testing instrument. It is indicated that the mechanical properties of composites doped with 0.75% graphene exhibit the maximum flexural strength of 460.8 MPa and the fracture toughness of 7.9 MPa.m1/2, respectively.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2016年第3期432-437,共6页
Journal of The Chinese Ceramic Society
基金
国家自然科学基金(51575285)
山东省科技发展计划(2014GGX103001)
山东省高等学校科研发展计划(J14LB02)资助
关键词
石墨烯
氧化铝
静电自组装
力学性能
graphene
aluminum
electrostatic self-assembly
mechanical properties
