| 纳米二维黑磷的PTFE薄膜涂层的制备及其摩擦性能研究 |
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| 作者姓名： | 彭世广 王婕 陈献平 郭岳 解国新 |
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| 作者单位： | 清华大学机械工程系摩擦学国家实验室;北京宇航系统工程研究所 |
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| 基金项目： | 北京市自然科学基金(3182010) |
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| 摘 要： | 采用旋涂法在7050铝合金表面制备了内含0、1.3%、3.8%纳米二维黑磷的聚四氟乙烯(PTFE)薄膜涂层。选择载荷为1N(接触压力为501MPa)、2Hz频率和5.3mm滑动行程条件下(平均线速度为21.2mm/s),使用球-盘摩擦仪进行摩擦磨损试验。利用环境扫描电镜(ESEM)和三维白光显微镜分别对涂层磨痕形貌和磨损率进行表征。黑磷含量为1.3%和3.8%的PTFE涂层的摩擦系数(COF)分别降低了23%(COF:0.079)和27%(COF:0.074),其磨损率分别从2.554×10~(-4) mm~3 N~(-1) m~(-1)降至0.758×10~(-4) mm~3 N~(-1) m~(-1)(降低70.3%)和0.156×10~(-4) mm~3 N~(-1) m~(-1)(降低93.8%)。结果表明,纳米黑磷材料与PTFE的复合膜不仅具有较好的润滑作用,而且能有效提高PTFE的耐磨性。
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| 关 键 词： | 黑磷 聚四氟乙烯 涂层 润滑性能 |
Preparation and Tribological Properties of PTFE Films Containing Nano-two-dimensional Black Phosphorus |
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| Authors: | PENG Shiguang WANG Jie CHEN Xianping GUO Yue and XIE Guoxin |
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| Institution: | State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University,Beijing Institute of Astronautical Systems Engineering,Beijing Institute of Astronautical Systems Engineering,Beijing Institute of Astronautical Systems Engineering and State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University |
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| Abstract: | Polytetrafluoroethylene (PTFE) film coatings with 0, 1.3% and 3.8% naro-two-dimensional black phosphorous were prepared on 7050 aluminum alloy by spin coating method. The friction wear test was carried out by using ball-on-disk tribometer with the selection of load as 1 N (contact pressure :501 MPa), 2 Hz frequency and 5.3mm sliding displacement (mean linear velocity 21.2mm/s). Three-dimensional white light and environmental scanning electron micro-scopy (ESEM) were used to characterize the wear amount and morphology of the coatings. The coefficient of friction (COF) of PTFE coatings with black phosphorus content of 1.3% and 3.8% decreased by 23% (COF: 0.079) and 27% (COF: 0.074), respectively, while the wear rate decreased from 2.554×10-4mm3N-1m-1 to 0.758×10-4mm3N-1m-1 (decreased by 70.3% ) and 0.156×10-4mm3N-1m-1 (decreased by 93.8%). The results show that the black phosphorus and PTFE composite with 2-D layered and unique honeycomb structure can not only provide good lubrication, but also greatly improve the wear resistance of PTFE. |
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