1-s2.0-S0301679X17304115-main.pdf (1.52 MB)

Asperity level tribological investigation of automotive bore material and coatings

Download (1.52 MB)
journal contribution
posted on 04.09.2017, 09:56 by Jamal Umer, Nick Morris, Michael Leighton, Ramin Rahmani, S.J. Howell-Smith, R. Wild, Homer Rahnejat
Choosing in-cylinder surfaces is complex. A well-chosen surface has low friction and wear. Conversely, poor oversight often leads to premature failure through wear and scuffing. Typically cylinder bore surfaces are selected experientially. This paper demonstrates the use of Atomic Force Microscopy in LFM mode, characterising typical cylinder bore materials and coatings. The approach uses integrated LFM with continuum contact mechanics. It evaluates the real contact area and effective elastic modulus of the surface, including the effect of any reactive surface film. Surface energy and shear strength, as well as the coefficient of friction in nanoscale interactions are also determined. These properties are measured for 6 cylinder bore materials, including for composite Nickel-Silicon Carbide and DLC, used for high performance engines.

Funding

The authors would like to express their gratitude to the Engineering and Physical Sciences Research Council (EPSRC) for the funding extended to this project under the CDT-ei scheme.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Tribology International

Citation

UMER, J. ...et al., 2018. Asperity level tribological investigation of automotive bore material and coatings. Tribology International, 117 (January 2018), pp. 131-140.

Publisher

© The Authors. Published by Elsevier Ltd.

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/

Acceptance date

24/08/2017

Publication date

2017-09-04

Notes

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

ISSN

1879-2464

Language

en

Licence

Exports