流体润滑下微小凹痕图案的摩擦特性研究

采用销-盘摩擦副接触方式在常温常压及液体润滑下,对不同密度的50μm和110μm大小的微小凹痕图案表面进行摩擦试验,探讨接触压力及滑动速度对不同大小以及密度的微小凹痕图案的摩擦性能影响,并利用Stribeck曲线分析在不同试验条件下不同密度的50μm和110μm大小的微小凹痕图案表面的摩擦特性.结果表明:降低摩擦中,不同的微小凹痕图案表面具有最佳的密度含量.即大小为50μm的微小凹痕图案中,密度为32.4%的微小凹痕图案表面的摩擦系数最低;大小为110μm的微小凹痕图案中,密度为19.8%的微小凹痕图案表面的摩擦系数最低.

Friction Characteristics for Density of Micro Dimples under Hydrodynamic Lubrication

Surface texturing of tribological application is another attractive technology of friction reducing. Also,reduction of friction is therefore considered to be a necessary requirement for improved efficiency of machine.In this paper attempts to investigate the effect of density for micro-scale dimple pattern using photoli- thography on bearing steel flat mated with pin-on-disk.We demonstrated the lubrication mechanism for a Stribeck curve,which has a relationship between the friction coefficient and a dimensionless parameter for lubrication condition.It is found that friction coefficient is depended on the density of surface pattern.It was thus verified that micro-scale dimple could affect the friction reduction considerably under mixed and hydrody- namic lubrication conditions from based on friction map.Lubrication condition regime has an influence on the friction coefficient induced the density of micro dimple.