Laser texturing of piston ring for tribological performance improvement

• Published in: Friction Vol. 11; no. 10; pp. 1895 - 1905
• Main Authors: Ferreira, Ana Rita Machado, Carvalho, Óscar Samuel Novais, Sobral, Luis, Carvalho, Sandra, Silva, Filipe Samuel
• Format: Journal Article
• Language: English
• Published: Beijing Springer 01.10.2023; Tsinghua University Press; Springer Nature B.V; LABBELS-Associate Laboratory,Guimar?es 4800058,Portugal; LABBELS-Associate Laboratory,Guimar?es 4800058,Portugal%MAHLE,Componentes de Motores,S.A.,Núcleo Industrial de Murtede,Cantanhede 3060-372,Portugal%CEMMPRE-Center for Mechanical Engineering,Materials and Processes,University of Coimbra,Rua Luís Reis Santos,Coimbra 3030-788,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%CMEMS-UMinho,University of Minho,Guimar?es 4800058,Portugal; CMEMS-UMinho,University of Minho,Guimar?es 4800058,Portugal; SpringerOpen
• Subjects: Aspect ratio; Coefficient of friction; Corrosion and Coatings; Cylinder liners; Diesel engines; Dimpling; Energy consumption; Engineering; Friction; Internal combustion engines; Laser beam texturing; Lasers; Lubricants & lubrication; Mechanical Engineering; Nanotechnology; Physical Chemistry; Piston ring; Piston rings; Research Article; Scanning electron microscopy; Science & Technology; Stainless steel; Surface texture; Surfaces and Interfaces; Texture; Texturing; Thin Films; Tribology; Wear; Wear resistance; surface texture; wear; piston ring; friction
• ISSN: 2223-7690; 2223-7704
• DOI: 10.1007/s40544-022-0723-5

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. This work was supported by Fundação para a Ciência e Tecnologia (FCT) and MAHLE, Componentes de Motores, S.A. through the grant SFRH/BDE/110654/2015 and by the project Add-Additive with the reference POCI-01-0247-FEDER- 024533.