Investigations in the fabrication of surface patterns for wettability modification on a Zr-based bulk metallic glass by nanosecond laser surface texturing

2020 ◽  
Vol 283 ◽  
pp. 116714 ◽  
Author(s):  
Yang Jiao ◽  
Emmanuel Brousseau ◽  
Xiaojun Shen ◽  
Xiaoxiang Wang ◽  
Quanquan Han ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Surface Texturing ◽  
Laser Surface ◽  
Laser Surface Texturing ◽  
Nanosecond Laser ◽  
Surface Patterns

scholarly journals In vitro cytocompatibility of a Zr-based metallic glass modified by laser surface texturing for potential implant applications

2021 ◽  
Vol 547 ◽  
pp. 149194
Author(s):  
Yang Jiao ◽  
Emmanuel Brousseau ◽  
Wayne Nishio Ayre ◽  
Edward Gait-Carr ◽  
Xiaojun Shen ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Surface Texturing ◽  
Laser Surface ◽  
Laser Surface Texturing

scholarly journals Softening and hardening on a Zr-based bulk metallic glass induced by nanosecond laser surface melting

2020 ◽  
pp. 140497
Author(s):  
Yang Jiao ◽  
Emmanuel Brousseau ◽  
Koji Kosai ◽  
Alexander.J.G. Lunt ◽  
Jiwang Yan ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Surface Melting ◽  
Laser Surface ◽  
Laser Surface Melting ◽  
Nanosecond Laser

Numerical Simulation of Laser Surface Micro-Texturing

2008 ◽  
Vol 575-578 ◽  
pp. 678-683
Author(s):  
Hui Xia Liu ◽  
Yi Xing Chen ◽  
Xiao Wang ◽  
Xiao Xia Meng ◽  
Yong Hong Fu ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Pulse Duration ◽  
Laser Intensity ◽  
Surface Texturing ◽  
Pulse Number ◽  
Laser Surface ◽  
Laser Surface Texturing ◽  
Laser Machining ◽  
Nanosecond Laser ◽  
Intensity Laser

In order to predict the geometry character of laser surface micro-texturing, the finite element analyzing software ANSYS is used to simulate temperature field and crater on the laser ablation. The influence and change regulation of laser intensity, laser pulse number and pulse duration in laser surface texturing are analyzed in detail. The simulation results conclude the best laser intensity in laser-pulse and materials interactions on certain conditions, and the best pulse duration in nanosecond laser micromachining. This research establishes the foundation for laser machining regular non-smooth surface in a rapid and effective way.

scholarly journals Does laser surface texturing really have a negative impact on the fatigue lifetime of mechanical components?

Friction ◽  
2021 ◽  
Author(s):  
Chia-Jui Hsu ◽  
Andreas Stratmann ◽  
Simon Medina ◽  
Georg Jacobs ◽  
Frank Mücklich ◽  
...  
Keyword(s):  
Boundary Lubrication ◽  
Surface Texturing ◽  
Contact Stresses ◽  
Laser Surface ◽  
Laser Surface Texturing ◽  
Wear Loss ◽  
Textured Surface ◽  
Periodic Patterns ◽  
Rolling Bearings ◽  
Fatigue Lifetime

AbstractLaser surface texturing (LST) has been proven to improve the tribological performance of machine elements. The micro-scale patterns manufactured by LST may act as lubricant reservoirs, thus supplying oil when encountering insufficient lubrication. However, not many studies have investigated the use of LST in the boundary lubrication regime, likely due to concerns of higher contact stresses that can occur with the increasing surface roughness. This study aims to examine the influence of LST on the fatigue lifetime of thrust rolling bearings under boundary lubrication. A series of periodic patterns were produced on the thrust rolling bearings, using two geometrically different designs, namely cross and dimple patterns. Base oil ISO VG 100 mixed with 0.05 wt% P of zinc dialkyldithiophosphate (ZDDP) was supplied. The bearings with cross patterns reduce the wear loss by two orders of magnitude. The patterns not only retain lubricant in the textured pockets but also enhance the formation of an anti-wear tribofilm. The tribofilm generation may be improved by the higher contact stresses that occur when using the textured surface. Therefore, in contrast to the negative concerns, the ball bearings with cross patterns were instead found to increase the fatigue life by a factor of three.

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