Zhao Jun, Chen Guangyan, He Yongyong, Li Shuangxi, Duan Zhiqiang, Li Yingru, Luo Jianbin
College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology Beijing 100029 China
State Key Laboratory of Tribology, Tsinghua University Beijing 100084 China.
RSC Adv. 2019 Feb 25;9(12):6583-6588. doi: 10.1039/c8ra10312g. eCollection 2019 Feb 22.
Two-dimensional (2D) nanocomposites as lubricant additives have been widely studied, but the synthetic process of the nanocomposites is not always environmentally friendly or economical. In this study, a new 2D nanocomposite, FeO/h-BN, has been prepared by physical mixing of exfoliated h-BN nanosheets and organically modified FeO nanoparticles. The nanocomposite displays a unique 2D-layered structure without folds or wrinkles. The FeO nanoparticles are uniformly dispersed on the h-BN nanosheet surfaces with the help of an elegant self-assembly strategy from van der Waals interactions. For the first time, FeO/h-BN is studied as a lubricant additive and it exhibits excellent tribological properties. The coefficient of friction (COF) and the wear depth can be respectively reduced by 47% and 80% compared with the base oil. Based on the advantages of a simple and low-cost synthetic process and significant tribological properties, FeO/h-BN offers great potential for lubrication application.
二维（2D）纳米复合材料作为润滑剂添加剂已得到广泛研究，但其合成过程并不总是环保或经济的。在本研究中，通过将剥离的h-BN纳米片与有机改性的FeO纳米颗粒进行物理混合，制备了一种新型二维纳米复合材料FeO/h-BN。该纳米复合材料呈现出独特的二维层状结构，没有褶皱或皱纹。借助范德华相互作用的优雅自组装策略，FeO纳米颗粒均匀地分散在h-BN纳米片表面。首次将FeO/h-BN作为润滑剂添加剂进行研究，它表现出优异的摩擦学性能。与基础油相比，摩擦系数（COF）和磨损深度可分别降低47%和80%。基于简单低成本合成工艺和显著摩擦学性能的优势，FeO/h-BN在润滑应用方面具有巨大潜力。
