tribological behavior of femtosecond laser textured

10-1108_ILT-03-2015-0042.pdf - Tribological behavior of

Design/methodology/approach Surface textures on beryllium bronze specimen were fabricated by femtosecond laser ablation (800 nm wavelength, 40 fs pulse duration, 1 kHz pulse repetition frequency), and then the tribological behaviors of pin-on-disc configuration of rock bit bearing were performed with 20CrNiMo/beryllium bronze tribo-pairs under non-Newtonian lubrication of rock bit grease.

Effect of Femtosecond Laser Power and Overlap Ratio on

This study prepared samples with femtosecond(fs)-laser-induced periodic surface structures (LIPSSs) controlled by laser power (or peak fluence, F0) and overlap ratio (OR) to improve the friction and wear behavior of the SKD 61 tool steel sliding against a hard Si3N4ceramic counterface in oil lubrications. Pin-on-plate (pin:Si3N4; plate:SKD 61 steel) tribological tests were conducted with the reciprocating motion perpendicular to the laser Effects of the array modes of laser-textured micro-dimples Sep 20, 2017 · A mixed lubrication model of textured cylinder linerpiston ring was built to investigate the effects of four array modes namely, square array, stagger array, stretching, and shortening along liner axis array of micro-dimples on the tribological properties of cylinder linerpiston ring pair.

Laser surface texturing of gray cast iron for improving

Feb 16, 2014 · Laser surface texturing process involves creation of microfeatures, e.g., tiny dimples, usually distributed in a certain pattern, covering only a fraction of the surface of the material that is being treated. The process offers several advantages for tribological applications, including improved load capacity, wear resistance, lubrication lifetime, and reduced friction coefficient. Modulation of dry tribological property of stainless steel Mar 04, 2015 · We reported on the modification of tribological properties of stainless steel by femtosecond laser surface microstructuring. Regular arranged micro-grooved textures with different spacing were produced on the AISI 304L steel surfaces by an 800-nm femtosecond laser. The tribological properties of smooth surface and textured surface were investigated by carrying out

On design and tribological behaviour of laser textured

The paper reports an investigation into the functional response of textured surfaces with different designs that incorporated arrays of micro-dimples and grooves (40 m diameter/width and 15 m depth for both patterns) produced on tungsten carbide (WC) blocks by employing nanosecond (ns) and femtosecond (fs) lasers. In particular, the tribological performance of the textured WC blocks State of the Art in Laser Surface Texturing J. Tribol Feb 07, 2005 · State of the Art in Laser Surface Texturing. Izhak Etsion. Izhak Etsion. Department of Mechanical Engineering, Technion, Haifa 32000, Israel. e-mail:[email protected] Search for other works by this author on:This Site. PubMed. Google Scholar.

Tribological Behavior of Surface Textured Gray Cast Iron

May 29, 2019 · Tribological Behavior of Surface Textured Gray Cast Iron at Different Texture Density by Ultrafast Laser (Received 11 June 2018; accepted 19 September 2018) Published Online:29 May 2019. CODEN:MPCACD Tribological Studies of Lubricated Laser-Textured Point The friction and wear behaviors of concentrated point contacts formed between lapped bearing steel balls and lapped/laser-textured flat bearing steel surfaces were studied in the boundary/mixed lubrication regimes under reciprocating rolling and sliding motions. Nanohardness variation in the vicinity of the dimples of the textured surface along with lubricant's wettability of the lapped and

Tribological behavior of nanotextured metallic surfaces

Tribological behavior of nanotextured metallic surfaces by femtosecond lasers Ana Beatriz Silvestre Ferreira Instituto Superior Técnico, Universidade de Lisboa, Portugal [email protected] 1. Abstract MEMS (Microelectromechanical Systems) are devices with very small dimensions, typically ranging from Wetting Behavior and Tribological Properties of Polymer Wetting Behavior and Tribological Properties of Polymer Brushes on Laser-Textured Surface Polymers (Basel). 2019 Jun 4;11(6):981. doi:10.3390/polym11060981. Authors Ming-Xue Shen 1

Tribological behavior of femtosecond laser textured

Sep 14, 2015 · Femtosecond laser surface processing 631 Tribological behavior of femtosecond laser textured surfaces Industrial Lubrication and Tribology Xia He, Lin Zhong, Guorong Wang, Yang Liao and Qingyou Liu Volume 67 · Number 6 · 2015 · 630638 Figure 1 The shape and arrangement of femtosecond laser texture Figure 2 Femtosecond laser processing schematic diagram denotes the center distance of adjacent texture