摘要
采用水热法制备了两种不同形貌结构的石墨烯/二硫化钼纳米复合物(RGO/MoS_2-1和RGO/MoS_2-2).通过电子显微镜、拉曼光谱、X射线衍射仪和热重分析仪对所制备材料的形貌、成分和晶格结构进行表征;利用SRV-IV微动摩擦磨损试验机考察了RGO/MoS_2-1和RGO/MoS_2-2作为PAO-4添加剂的摩擦学性能.结果显示具有花状结构的RGO/MoS_2-2与RGO/MoS_2-1相比具有更大的层间距,且因其较大的层间距使得RGO/MoS_2-2表现出较好的摩擦学性能. Raman和XPS对润滑机理的表征结果证实了RGO/MoS_2复合纳米添加剂优异的摩擦学性能归因于吸附和摩擦化学反应的协同作用.
The nanocomposites of graphene/MoS2(RGO/MoS2-1 and RGO/MoS2-2)of different morphological structures were prepared by hydrothermal method.Their morphology,chemical composition and crystal structure were examined by electron microscope,Raman,X-ray diffraction and thermogravimetric analysis.Furthermore,the tribological properties of RGO/MoS2-1 and RGO/MoS2-2 in PAO-4 were tested by using an SRV-IV tribometer.Results show that the interlayer spacing of RGO/MoS2-2 was larger than that of RGO/MoS2-1 because of the flower-like structure,and RGO/MoS2-2 exhibited better tribological property.The characterization of the lubrication mechanism was confirmed by Raman and X-ray photoelectron spectrometer,showing that the excellent tribological properties of RGO/MoS2 composite nano-additives were attributed to the synergistic effect of adsorption and tribochemical reactions.
作者
巴召文
黄国威
乔旦
冯大鹏
BA Zhaowen;HUANG Guowei;QIAO Dan;FENG Dapeng(State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Gansu Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology,Gansu Lanzhou 730050,China)
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2019年第2期140-149,共10页
Tribology
基金
国家自然科学基金项目(51705506)
固体润滑国家重点实验室开放课题(LSL-1708)资助~~
