Effect of Low Depth Surface Texturing on Friction Reduction in Lubricated Sliding Contact

Lubricants

Philipp Grützmacher¹  Ori Stav²  Haytam Kasem²  Carsten Gachot³ 

[1] Department of Materials Science and Engineering, Functional Materials, Saarland University, Saarbrücken 66123, Germany;Department of Mechanical Engineering, Technion, Haifa 32000, Israel;Institute for Engineering Design and Logistics Engineering E307-3, Vienna University of Technology, Vienna 1060, Austria;

关键词: surface texturing;    low depth;    lubricated sliding contact;    friction reduction;   

DOI  :  10.3390/lubricants6030062

来源: DOAJ

【 摘 要 】

Laser surface texturing is an interesting possibility to tailor materials’ surfaces and thus to improve the friction and wear properties if proper texture feature sizes are selected. In this research work, stainless steel surfaces were laser textured by two different laser techniques, i.e., the direct laser interference patterning by using a nanosecond pulsed Nd:YAG laser and additionally by an ultrashort pulsed femtosecond Ti:Sa. The as-textured surfaces were then studied regarding their frictional response in a specially designed linear reciprocating test rig under lubricated conditions with a fully formulated 15W40 oil. Results show that dimples with smaller diameter lead to a significant reduction in the coefficient of friction compared to the dimples with a larger diameter and surfaces with a grid-like surface pattern produced by direct laser interference patterning.

【 授权许可】

Unknown