An insight into the effect surface morphology, processing, and lubricating conditions on tribological properties of Ti6Al4V and UHMWPE pairs

Kamil Leksycki, Eugene Feldshtein, Radosław W. Maruda, Navneet Khanna, Grzegorz M. Królczyk, Catalin I. Pruncu

Research output: Contribution to journalArticlepeer-review

Abstract

The effects of surface topography, processing, and environment conditions during tribological contact between Ti6Al4V titanium alloy and UHMWPE friction pairs were systematically evaluated. Hence, in this research the polyethylene samples (blocks) having a constant surface roughness were rubbed against counter-bodies (rollers) made of titanium alloy with different roughness of surfaces. The counter-samples were manufactured using either dry machining and/or minimum quantity lubrication (MQL) conditions. Such cutting conditions are harmless to humans and the environment. Simulated body fluid (SBF) and distilled water was used to simulate the tribological trials. We have noted that the lubricant applied to protect the integrity of machined parts, the rollers, have only minor impact on the tribological features of the friction pairs tested. Further, the samples produced with dry machining demonstrated a slightly lower momentary friction coefficient and temperature. In contrast, the MQL method enable reduced friction surface and significant wear accumulation. Further, it was found that the minimum and maximum values of the Sa texture parameter associated to tribological parameters do not exceed 21% and 4%, when is used dry and MQL methods, respectively. Nevertheless, the distilled water revealed a much better wear resistance when comparing to SBF, and the later one trigger as well as an accentuated wear progress with different patterns. The results of the study are important in the design of new biomedical components produced by finish turning.

Original languageEnglish
Article number107504
Number of pages10
JournalTribology International
Volume170
Early online date28 Feb 2022
DOIs
Publication statusE-pub ahead of print - 28 Feb 2022

Keywords

  • friction and wear behavior
  • near-dry cutting conditions
  • SBF environment
  • surface topography
  • Ti6Al4V alloy - UHMWPE pair

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