Femtosecond Pulsed Ti:Sapphire Laser-Assisted Surface Texturing on Piston Ring and Its Tribology Characterization
| Autor: | Nilesh J. Vasa, V. Ezhilmaran, Sivarama Krishnan, L. Vijayaraghavan |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Surface (mathematics)
0209 industrial biotechnology Materials science business.industry Mechanical Engineering Ti:sapphire laser 02 engineering and technology Surfaces and Interfaces Tribology Surfaces Coatings and Films Characterization (materials science) 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering Mechanics of Materials Femtosecond Optoelectronics Piston ring business |
| Zdroj: | Journal of Tribology. 143 |
| ISSN: | 1528-8897 0742-4787 |
| Popis: | Femtosecond laser-assisted surface texturing of compression piston rings is proposed and demonstrated. A femtosecond pulsed Ti3+:sapphire laser is used to generate dimples of the same size but with different area density on a moly-chrome ceramic deposited cast iron piston ring. The influence of the surface morphology and tribology operating conditions, such as reciprocating frequency and temperature of the lubricant, on friction and wear characteristics of textured piston rings and plateau honed liner samples is investigated. A decrease in the friction coefficient is observed with the texturing of rings. The dimple area density, which is defined as the ratio of the total textured area and the total area of the surface, of 16% and 27% offered a reduced coefficient of friction and minimize wear on the liner surface. |
| Databáze: | OpenAIRE |
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