Friction and wear behaviour of ceramic-hardened steel couples under reciprocating sliding motion

Abstract

The friction and wear behaviour of ZrO*-Y203, Zr02-Y203--Ce02 and ZrQ--A1203 composite ceramics against hardened steel AISI-52100 were investigated using a pin on plate configuration under reciprocating motion. The reproducibility of the results was examined in this configuration. Wear characteristics were separated into system and material contributions. Under the conditions used, all the ceramic components exhibited rather low wear rates (less than 10m6 mm3 N-' m-'). The frictional behaviour of ceramic-metal couples depended on a metallic layer transferred from the steel plate to the ceramic pin. A relation was determined between surface hardness and friction of ceramic-metal pairs. It was shown that the affinity for the transfer of the metal towards ceramic surfaces depended on the physical properties of the materials. In the tribosystems investigated, the effect of the hardness of the ceramics on friction and wear behaviour is found to be more important than that of toughness of the ceramics.

Tribological behaviour of colloidally processed sialon ceramics sliding against steel under dry conditions

“…Also it can be observed that, after 2000 m, the a-and b-sialon ceramics presents the lower and the highest friction coefficient, respectively, under dry testing conditions. According to literature [20][21][22], the lowest friction behaviour was expected for a-sialon, as observed, since the a-phase exhibits higher hardness and thermal shock resistance compared to b-phase.…”

Preparation of Y2Si2O7/ZrO2 Composites and Their Composition – Mechanical Properties – Tribology Relationships

“…The stiffness of materials, or the ratio of hardness to Young's modulus, H / E , has also been proposed as one of the key parameters controlling wear . Usually, a higher value of H / E means improved resistance to scratching in the contact area during dry sliding . Figures (e)–(f) plot the H / E value as a function of ZrO 2 content with its effects on COF and wear rate.…”

Effect of Ti5Si3 on wear properties of Ti3Si(Al)C2

“…32 A higher value of H/E means that the materials have improved resistance to scratching in the contact area during dry sliding. 33,34 The results in the previous section show that hardness increases with the increment of Ti 5 Si 3 content, and the Young's modulus of Ti 5 Si 3 (E = 156 GPa) is lower than that of Ti 3 Si(Al)C 2 , so wear resistance can be improved.…”