期刊
LUBRICANTS
卷 6, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/lubricants6030062
关键词
surface texturing; low depth; lubricated sliding contact; friction reduction
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.
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