ISSN   1004-0595

CN  62-1095/O4

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季佳伟, 刘焜, 王伟. 激光微造型对粉末润滑界面边界层行为和润滑特性的影响[J]. 摩擦学学报, 2016, 36(3): 332-340. DOI: 10.16078/j.tribology.2016.03.010
引用本文: 季佳伟, 刘焜, 王伟. 激光微造型对粉末润滑界面边界层行为和润滑特性的影响[J]. 摩擦学学报, 2016, 36(3): 332-340. DOI: 10.16078/j.tribology.2016.03.010
JI Jiawei, LIU Kun, WANG wei. Effects of Laser Texturing on the Behavior of Boundary Layer and Lubricating Property in Powder Lubrication[J]. TRIBOLOGY, 2016, 36(3): 332-340. DOI: 10.16078/j.tribology.2016.03.010
Citation: JI Jiawei, LIU Kun, WANG wei. Effects of Laser Texturing on the Behavior of Boundary Layer and Lubricating Property in Powder Lubrication[J]. TRIBOLOGY, 2016, 36(3): 332-340. DOI: 10.16078/j.tribology.2016.03.010

激光微造型对粉末润滑界面边界层行为和润滑特性的影响

Effects of Laser Texturing on the Behavior of Boundary Layer and Lubricating Property in Powder Lubrication

  • 摘要: 粉末润滑在极端条件下可以有效地减摩, 但粉末的介入性和界面保持性仍有待提高, 研究尝试利用表面的激光微造型, 阐明其对粉末润滑特性的影响, 改善润滑特性. 采用控制变量法, 分别改变多功能摩擦磨损试验机的载荷和转速, 使用形状测量激光显微系统观察载荷和转速对微造型表面摩擦特性的影响. 结果表明: 激光微造型表面相对于无微造型表面能承受更大的载荷和转速; 激光微造型部位最先形成蝌蚪状界面边界层, 在界面边界层损坏过程中, 微造型凹坑部位界面边界层保留时间较长, 出现蝌蚪状残留和圆坑残留现象; 在一定范围内, 表面粗糙度随着载荷和转速的增大而逐渐增大.

     

    Abstract: Powder lubrication can effectively reduce the friction under extreme conditions, but the intervention of powder and the retention of interface are yet to be improved. In this paper, the laser texturing was used and its impact on the properties of powder lubrication was clarified. The effects of load and speed to the friction characteristics of textured surface were analyzed by changing the load and speed of the multifunctional friction and wear tester separately and using laser microscope. Results show that textured surface worked under higher load and higher speed than that of smooth surface. The tadpole-like boundary layer formed initially at the textured area. It can be observed that boundary layer at the textured area had a longer duration. In addition, the surface roughness increased gradually with the increase of speed and load.

     

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