A multi-technique characterization of the tribofilm formed by a fully formulated CVT fluid

Can Wang*, Hubert Gojzewski, Dik J. Schipper

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

In this work, the morphology, thickness, chemical composition and mechanical properties of the tribofilm formed by a fully formulated CVT fluid are investigated by multiple techniques and linked to the frictional and wear characteristics of a pin-on-disc tribosystem. It is found that the tribosystem shows higher friction and wear when tested at 150 °C than at 80 °C. The main reason is that although the morphology and thickness are similar, the tribofilms formed at different temperatures have different chemical compositions and mechanical properties. The tribofilm formed at 150 °C is Fe richer and has greater hardness and shear strength, which leads to a higher tribochemical wear rate and a greater interfacial shear force.

Original languageEnglish
Article number106201
Number of pages12
JournalTribology international
Volume146
Early online date20 Jan 2020
DOIs
Publication statusE-pub ahead of print/First online - 20 Jan 2020

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Keywords

  • UT-Hybrid-D
  • Chemical composition
  • Mechanical properties
  • Tribofilm
  • AFM

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