This paper attempted to solve the problem of scuffing mechanism on the basis of the-ories in three fields: Boundary lubrication , Hydrodynamic lubrication and Surface contact. forlineasr contacting, a simple solution ...This paper attempted to solve the problem of scuffing mechanism on the basis of the-ories in three fields: Boundary lubrication , Hydrodynamic lubrication and Surface contact. forlineasr contacting, a simple solution has been obtained.展开更多
The effects of boundary (liquid/solid) slip on hydrodynamics are well recognized.However,it is extremely difficult to quantify in-situ boundary slip in a lubrication contact.Therefore,an effective interfacial paramete...The effects of boundary (liquid/solid) slip on hydrodynamics are well recognized.However,it is extremely difficult to quantify in-situ boundary slip in a lubrication contact.Therefore,an effective interfacial parameter that is well correlated with the lubrication effect is of practical significance.This paper presents an examination of common interfacial parameters,including surface tension,contact angle,contact angle hysteresis,and a recently proposed spreading parameter.Specimen surfaces of different hydro/oleophobicity were prepared and characterized using the aforementioned interfacial parameters.These samples were further used as bearing surfaces in hydrodynamic lubrication tests.The correlations of these parameters with the measured lubricating film thickness were examined and compared.The key parameter closely related to the hydrodynamic effect was identified.展开更多
文摘This paper attempted to solve the problem of scuffing mechanism on the basis of the-ories in three fields: Boundary lubrication , Hydrodynamic lubrication and Surface contact. forlineasr contacting, a simple solution has been obtained.
基金The work described in this paper was fully supported by the Research Grants Council of Hong Kong，Natural Science Foundation of China
文摘The effects of boundary (liquid/solid) slip on hydrodynamics are well recognized.However,it is extremely difficult to quantify in-situ boundary slip in a lubrication contact.Therefore,an effective interfacial parameter that is well correlated with the lubrication effect is of practical significance.This paper presents an examination of common interfacial parameters,including surface tension,contact angle,contact angle hysteresis,and a recently proposed spreading parameter.Specimen surfaces of different hydro/oleophobicity were prepared and characterized using the aforementioned interfacial parameters.These samples were further used as bearing surfaces in hydrodynamic lubrication tests.The correlations of these parameters with the measured lubricating film thickness were examined and compared.The key parameter closely related to the hydrodynamic effect was identified.
