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Micromachines 2015, 6(11), 1606-1616; doi:10.3390/mi6111444

Reduction of Friction of Metals Using Laser-Induced Periodic Surface Nanostructures

1
School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2
State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
*
Author to whom correspondence should be addressed.
Academic Editor: Maria Farsari
Received: 21 August 2015 / Revised: 27 September 2015 / Accepted: 20 October 2015 / Published: 28 October 2015
(This article belongs to the Collection Laser Micromachining and Microfabrication)
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Abstract

We report on the effect of femtosecond-laser-induced periodic surface structures (LIPSS) on the tribological properties of stainless steel. Uniform periodic nanostructures were produced on AISI 304L (American Iron and Steel Institute steel grade) steel surfaces using an 800-nm femtosecond laser. The spatial periods of LIPSS measured by field emission scanning electron microscopy ranged from 530 to 570 nm. The tribological properties of smooth and textured surfaces with periodic nanostructures were investigated using reciprocating ball-on-flat tests against AISI 440C balls under both dry and starved oil lubricated conditions. The friction coefficient of LIPSS covered surfaces has shown a lower value than that of the smooth surface. The induced periodic nanostructures demonstrated marked potential for reducing the friction coefficient compared with the smooth surface. View Full-Text
Keywords: femtosecond laser; laser-induced periodic surface structures; tribological properties; stainless steel femtosecond laser; laser-induced periodic surface structures; tribological properties; stainless steel
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Wang, Z.; Zhao, Q.; Wang, C. Reduction of Friction of Metals Using Laser-Induced Periodic Surface Nanostructures. Micromachines 2015, 6, 1606-1616.

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