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Research Article | Open Access

Laser texturing of piston ring for tribological performance improvement

Rita FERREIRA1,2,3,4( ), Óscar CARVALHO1,2, Luís SOBRAL4, Sandra CARVALHO3, Filipe SILVA1,2
CMEMS–UMinho, University of Minho, Guimarães 4800058, Portugal
LABBELS–Associate Laboratory, Guimarães 4800058, Portugal
CEMMPRE–Center for Mechanical Engineering, Materials and Processes, University of Coimbra, Rua Luís Reis Santos, Coimbra 3030-788, Portugal
MAHLE, Componentes de Motores, S.A., Núcleo Industrial de Murtede, Cantanhede 3060-372, Portugal
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Abstract

The radial surface coating layer of compression piston rings is used to improve their wear resistance during the internal combustion engine operation. However, at top dead centers, the friction coefficient of the piston ring–cylinder liner pair is detrimental to the engine’s tribological performance. In this work, dimples with different texture dimensions and densities were tested in a home-developed tribometer. The friction coefficient was measured for all samples, and for those with the best results, their wear resistance was assessed. The texture with an aspect ratio of 0.25 and a density area of 15% reported the best tribological results.

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Keywords

piston ringsurface texturefrictionwear

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Friction
Volume 11 Issue 10,
October 2023
Pages 1895-1905
DOI: 10.1007/s40544-022-0723-5

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Cite this article:
FERREIRA R, CARVALHO Ó, SOBRAL L, et al. Laser texturing of piston ring for tribological performance improvement. Friction, 2023, 11(10): 1895-1905. https://doi.org/10.1007/s40544-022-0723-5

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Received: 20 June 2022
Revised: 21 September 2022
Accepted: 09 November 2022
Published: 13 March 2023
© The author(s) 2022.

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