摘要
本文中系统研究了类金刚石(Diamond-like carbon,简称DLC)固体润滑薄膜与一系列不同黏度的烷烃、醇类液体润滑介质的复合润滑性能,并深入探讨了介质黏度、极性及摩擦配副在固液复合设计中的影响规律.我们发现所用DLC薄膜在所考察润滑介质中均表现出较好的稳定性及亲和性,而摩擦行为则呈现较大的差异:在非极性烷烃化合物润滑环境下,DLC/DLC和钢/钢摩擦副的摩擦系数随介质黏度的增加改变不大,钢/DLC摩擦副的摩擦系数则随着介质黏度的升高而逐渐降低;在极性的醇类介质中,钢/钢摩擦副的摩擦系数随着介质黏度的增大先下降后急剧上升,而钢/DLC和DLC/DLC摩擦副的摩擦系数随介质黏度的升高而降低.总之,介质黏度、极性和摩擦配副对体系润滑行为有很大影响,在进行固液复合润滑体系设计时,需综合考虑三者的相互作用关系.
This paper systematically studied the composite lubrication effects between diamond -like carbon （DLC） film and fluid lubricants, and investigated the effects of viscosity, polarity and friction pairs on the friction behavior of lubricated DLC. It is found that the DLC exhibited good stability and affinity with the selected lubricants, while the friction behavior exhibited strong dependence on the lubricant polarity and friction pairs. In nonpolar alkenes, the contact pair exhibited strong influence on friction behavior. But in polar alcohols, both the viscosity and contacts pairs showed strong influence on tribological behavior. Thus, for the design of DLC based solid - liquid lubrication system, a comprehensive consideration about lubricant viscosity, polarity and friction pairs is needed.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2014年第2期180-186,共7页
Tribology
基金
国家重点基础研究发展规划项目(973)(2011CB706603)~~
关键词
DLC薄膜
固-液复合润滑
混合润滑
配副
diamond - like carbon, solid/fluid composite lubrication, mixed librication, friction pairs
