Rahmani_1-s2.0-S0301679X19306292-main.pdf (1.95 MB)
Nanoscale frictional characterisation of base and fully formulated lubricants based on activation energy components
journal contribution
posted on 2019-12-16, 11:12 authored by Jamal Umer, Nick MorrisNick Morris, Ramin RahmaniRamin Rahmani, Sashi Balakrishnan, Homer RahnejatTribofilms are activated using precision sliding strip microscale tribometry with a base and a
fully formulated lubricant with a ZDDP anti-wear additive. The employed tribometry uses
combined pressure, shear and temperature activation. The chemical compositions of the
formed tribofilms are ascertained through use of Photoelectron X–ray Spectroscopy (XPS).
Nanoscale frictional measurements of the tribofilms are reported using fluid cell lateral force
microscopy (LFM). The measured coefficient of interfacial boundary shear strength is used
with analytical contact mechanics to relate the in-situ conditions to the activation energy
components of the Eyring potential cage model. The paper shows that combined LFM and
the Eyring model can explain the variations in the frictional characteristics of formed
tribofilms.
Funding
Engineering and Physical Sciences Research Council (EPSRC)
BP through Centre for Doctoral Training in Embedded Intelligence (CDT-ei)
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
Tribology InternationalVolume
144Publisher
ElsevierVersion
- VoR (Version of Record)
Rights holder
© The AuthorsPublisher statement
This is an Open Access Article. It is published by Elsevier under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/Acceptance date
2019-12-11Publication date
2019-12-12Copyright date
2019ISSN
0301-679XPublisher version
Language
- en