The effect of steel disc surface texture in contact with ceramic ball on friction and wear in dry fretting

Abstract

Ceramics are used in a wide range of applications including bearings. Ceramic-metal contacts are of great potential for the future. The purpose of this paper is to study the effect of a surface topography of a steel disc in contact with ceramic ball on friction and wear under dry gross fretting regime. Experiments were carried out using an Optimol SRV5 tribological tester under dry friction conditions in the gross fretting regime. The number of cycles was set to 18000, temperature was 30 °C, the stroke was set to 0.1 mm, the normal load was 45 N. A ceramic ball from tungsten carbide (WC) material of 10 mm diameter was put in contact with steel discs of various surface textures with hardness of 47 and 59 HRC. It was found that the average coefficient of friction and volumetric wear of the tribological system were inversely proportional to disc roughness height. These dependencies were stronger for higher disc hardness.

The Effect of Surface Texturing on Dry Gross Fretting

“…Wear of disc was substantially higher than wear of balls. Similar results were obtained in the other tests [26].…”

“…Experiments were carried out under dry-friction conditions using Optimol SRV5 tribotester (Optimol Instruments Prüftechnik GmbH, Munich, Germany) in a ball-on-flat configuration. This tester was previously used in other fretting tests [26,27]. The displacement of a ball was measured by an inductive displacement sensor which was mounted next to the oscillating module ( Figure 1).…”

“…In order to obtain contact between a ball and dimples, the largest amplitude of oscillation was used, allowing the presence of fretting for smaller normal load; for technical reasons, Experiments were carried out for two kinds of sliding pairs, steel-steel and steel-ceramics, in order to study the effect of disc surface texturing on dry gross fretting for adhesive and abrasive wear types. It was found from the previous investigations that for the steel-ceramic pair, abrasion was the dominant wear type, and for steel-steel contact, adhesive wear occurred [26,27]. Therefore, balls were made from WC ceramics and 100Cr6 steel of 60 HRC hardness.…”

The correlation between friction coefficient and areal topography parameters for AISI 304 steel sliding against AISI 52100 steel

“…However, in most of the papers, only R q , R sk , R ku or its 3D equivalent topography parameters have been reported. Recently, Lenart et al [20] showed that there are other topography parameters which also vary significantly during fretting wear. Sedlaček et al [28] showed a correlation between skewness, kurtosis and tribological behavior of contacting surfaces.…”

The Effect of Disc Surface Topography on the Dry Gross Fretting Wear of an Equal-Hardness Steel Pair

“…An increase in the surface roughness height led to improved wear resistance. The authors of [41] investigated the influence of the surface texture of steel discs contacting ceramic balls on the tribological performance of the sliding assembly in a dry gross sliding fretting regime and found that the results were better for lower disc roughness heights. The influence of disc surface texturing on dry gross sliding fretting of a ball-on-disc assembly was investigated [42].…”