颗粒流润滑的现状和展望

颗粒流润滑的思路是将固体材料以颗粒（粉末）状态直接导入摩擦副,使摩擦间隙充满固体颗粒,利用微小颗粒的摩擦、变形、碰撞、挤压和滑滚等微观运动,减少作相对运动两表面微凸体的直接接触,从而达到减少摩擦和保护表面的目的.总结了颗粒流润滑在航天磁悬浮备用轴承、径向轴承、制动器、磨削加工、压铸加工等工程领域中的研究和应用现状.分析和对比了已有的颗粒流润滑理论如类流体润滑理论、碰撞动理学润滑理论、离散单元和元胞自动机理论,指出摩擦间隙中颗粒流行为和颗粒接触模型是颗粒流润滑理论的关键问题.最后,从多尺度特性、非连续特性、环保等角度对颗粒流润滑在未来的进一步发展进行了展望.

Review and Prospect of Particulate Lubrication

The idea of particulate lubrication is introduced and discussed.In particulate lubrication,the solid particles are directly led into interface of tribopairs and abound in it.By utilizing friction,deformation,collision,crash,slide and rolling of these solid particles,the direct contact of two moving surface were minimized,and so the damage of surface was avoided.The research and application status of particulate lubrication in space magnetic backup bearing,brake,milling,casting,etc.are analyzed.The existing ...