J.C. Walker
Tribological behaviour of an electrochemical jet machinedtextured Al-Si automotive cylinder liner material
Walker, J.C.; Kamps, T.J.; Lam, J.W.; Mitchell-Smith, Jonathon; Clare, Adam T.
Authors
T.J. Kamps
J.W. Lam
Jonathon Mitchell-Smith
ADAM CLARE adam.clare@nottingham.ac.uk
Professor of Manufacturing Engineering
Abstract
This paper investigates the use of Electrochemical Jet Machining to surface texture a hyper-eutectic Al-Si cylinder liner material. Samples were lapped to a 6?m finish followed by immersion in 1mol NaOH to expose the primary silicon colonies above the aluminium surface. Texturing was carried out using a NC system comprising of a fine gauge nozzle (cathode) jetting a solution of 2.3 mol NaCl on the surface (anode) whilst applying a current density of 220A/cm2. An array of hemispherical dimples at 1.5mm spacing was created, with an average diameter of 420?m and depth of 40?m, corresponding to an ? ratio of 0.095. Lubricated reciprocating sliding was carried out at stroke length of 25mm in a bath of PAO (4cSt) against a 52100 cylinder of 6mm diameter and 16mm length.
Sliding frequencies were incremented at 1Hz intervals between 1-15Hz at 50N load increments from 50-200N. Stribeck curves indicated a reduction of the friction coefficient due to texturing of up to 0.05 in the mixed lubrication regime, representing a decrease of 38.5%. Optical profilometry and SEM indicated that abrasion and formation of a surface tribo-layer was mitigated in regions of the Al-Si surface where textured features were present parallel to the sliding direction.
Citation
Walker, J., Kamps, T., Lam, J., Mitchell-Smith, J., & Clare, A. T. (2017). Tribological behaviour of an electrochemical jet machinedtextured Al-Si automotive cylinder liner material. Wear, 376-377(B), 1611-1621. https://doi.org/10.1016/j.wear.2017.01.085
Journal Article Type | Article |
---|---|
Acceptance Date | Jan 23, 2017 |
Online Publication Date | Jun 15, 2017 |
Publication Date | Apr 15, 2017 |
Deposit Date | Jan 27, 2017 |
Publicly Available Date | Mar 29, 2024 |
Journal | Wear |
Print ISSN | 0043-1648 |
Electronic ISSN | 1873-2577 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 376-377 |
Issue | B |
Pages | 1611-1621 |
DOI | https://doi.org/10.1016/j.wear.2017.01.085 |
Keywords | Surface Texturing; Automotive; Al-Si; Friction; Wear; Electrochemical Jet Machining |
Public URL | https://nottingham-repository.worktribe.com/output/839474 |
Publisher URL | https://www.sciencedirect.com/science/article/pii/S0043164817302168 |
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Tribological behaviour of an electrochemical jet
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Publisher Licence URL
https://creativecommons.org/licenses/by/4.0/
Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0
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