Abstract
In many industrial applications, a modification of the surface geometry can enhance the tribological behaviour of lubricated sliding contacts. In this paper, the effect of surface texturing on the coefficient of friction in parallel sliding lubricated surfaces is investigated. It is shown that surface texturing can improve film formation and, as a result, the load-carrying capacity as well as a reduction in the coefficient of friction. With the numerical model developed, and by considering cavitation, the effects of shape, depth, size, and the textured area fraction on the frictional behaviour of parallel sliding lubricated contacts under conditions of mixed lubrication is studied. In this article it is shown that the surface texturing can have a beneficial effect, in order to decrease friction.
Highlights
There is a growing demand for improving the tribological performance of sliding lubricated contacts in many applications
These results show that the texture pitch has an influence on the hydrodynamic lubrication component component of mixed lubrication
The aim of this research was to study and predict the effect of surface texturing on the coefficient of friction for parallel sliding contacts
Summary
There is a growing demand for improving the tribological performance (frictional behaviour) of sliding lubricated contacts in many applications. In the case of lubricated contacts, a geometrical modification on the micro-scale of the surfaces can be a potential solution for this problem. Surface texturing has been widely applied as a well-known method of reducing friction and wear between sliding surfaces separated by a thin lubricant film. Due to improvement of texturing techniques it is possible to employ different geometrical patterns of texturing. These surface modification techniques include machining, photoetching, etching techniques, ion beam texturing, and laser texturing [2]. The process parameters should be determined carefully to avoid a bulge at the rims of the textures [4,5]
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