Friction Behavior of a Textured Surface against Several Materials under Dry and Lubricated Conditions.

Linqing Bai,Jianxin Sun,Pengcheng Zhang,Zulfiqar Ahmad Khan

doi:10.3390/ma14185228

Linqing Bai, Jianxin Sun + Show 2 more

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https://doi.org/10.3390/ma14185228

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Abstract

This paper reports research on the frictional behavior of a textured surface against several materials under dry and lubricated conditions, and this is aimed to provide design guidelines on the surface texturing for wide-ranging industrial applications. Experiments were performed on a tribo-tester with the facility of simulating A ball-on-plate model in reciprocating motion under dry, oil-lubricated, and water-lubricated conditions. To study the frictional behavior of textured SiC against various materials, three types of ball-bearing –elements, 52100 steel, silicon nitride (Si3N4), and polytetrafluoroethylene (PTFE), were used. Friction and wear performance of an un-textured surface and two types of widely used micro-scale texture surfaces, grooves and circular dimples, were examined and compared. The results demonstrated that the effect of surface textures on friction and wear performance is influenced by texture parameters and the materials of friction pairs. The circular-dimple texture and the groove texture, with certain texture parameters, played a positive role in improving friction and wear performance under specific operating conditions used in this research for SiC–steel and SiC–Si3N4 friction pairs; however, there was no friction and wear improvement for the textured SiC–PTFE friction pair. The results of this study offer an understanding and a knowledge base to enhance the performance of bearing elements in complex interacting systems.

Highlights

For equipment which works under extreme conditions under extreme conditions, a poor lubrication state of the key parts severely restricts the service performance of the whole machine or system
The use of surface textures has impacts on several key attributes that include the actual area of contact, the type of lubricating fluid, contact pressure, and the distribution of wear debris in the contact zone
These aspects say (i) the surface texture can enhance the fluid hydrodynamic effect and in turn produce additional bearing capacity, (ii) textures have the capacity of storing a lubricant and of providing the “secondary supply” of lubrication to the contact area when and if the lubricant is scarce between the interacting surfaces within the maximum pressure contact area, and (iii) textures have the ability to reduce abrasive particles and the related wear by accommodating abrasive grains as refugee pockets

Summary

Introduction

For equipment which works under extreme conditions under extreme conditions, a poor lubrication state of the key parts severely restricts the service performance of the whole machine or system. How to effectively reduce equipment failure caused by severe friction and wear under extreme conditions has become a common issue that needs to be resolved. The effects of surface texture on frictional performance and tribological wear are varied. Under a dry-friction condition, the surface frictional performance and tribological wear are varied. Under a dry-friction condition the surface texture mainly plays a role in storing debris and preventing further severe wear [11]. Under a lubricated condition, the mechanism of surface[2] otfe2x1turing i more diversified, which can play a role in increasing hydrodynamic pressure and lubricating oil storage and grinding debris capture [12]

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