scholarly journals Effect of Laser surface texturing on coating adherence and tribological properties of CuNiIn and MoS2 coating

2021 ◽  
Author(s):  
Vishal Uttamra Bagade ◽  
Muthukannan Duraiselvam ◽  
Niranjan Sarangi ◽  
Parthiban K
Keyword(s):  
Tribological Properties ◽  
Surface Texturing ◽  
Surface Preparation ◽  
Laser Surface ◽  
Fretting Wear ◽  
Atmospheric Plasma ◽  
Laser Surface Texturing ◽  
Preparation Process ◽  
Preparation Methods ◽  
Grit Blasting

Abstract In aero gas turbine engine, copper nickel indium (CuNiIn) and molybdenum loaded disulphide (MoS2) duplex coating is applied on Ti6Al4V blades in bladed disk configuration of low pressure and high pressure compressor. Coating between blade and disk is provided to prevent fretting wear due to direct metal to metal contact of Ti6Al4V. Generally, grit blasting will be done for preparation of the surface before the application of coating. Laser surface texturing (LST) process can be explored by aero engine industry as a new surface preparation process for compressor blades. To compare two different surface preparation methods, Ti6Al4V surface is prepared by two different processes, conventional grit blasting as well as laser surface texturing (LST). LST with different elliptical and square patterns are created on Ti6Al4V. Surface topography is analyzed by SEM and WLI. CuNiIn is sprayed by atmospheric plasma spray (APS) and MoS2 on top of CuNiIn by painting and curing. Effects of surface preparation on coating adherence as well as on tribological properties are studied. The results showed that geometry and dimensions of LST pattern influences the coating adherence and wear performance. LST process can be optimized for better performance and explored as an alternative surface preparation process in industry for thermal spray coatings.

Combination of laser surface texturing and DLC coating on PEEK for enhanced tribological properties

2017 ◽  
Vol 329 ◽  
pp. 29-41 ◽  
Author(s):  
Johnny Dufils ◽  
Frédéric Faverjon ◽  
Christophe Héau ◽  
Christophe Donnet ◽  
Stéphane Benayoun ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Surface Texturing ◽  
Laser Surface ◽  
Laser Surface Texturing ◽  
Dlc Coating

scholarly journals Improvement of Tribological Properties through the Application of Laser Surface Texturing and Nanolubricants in CNC Equipment Elements

2020 ◽  
Vol 42 (1) ◽  
pp. 159-164
Author(s):  
D. Maldonado-Cortés ◽  
L. Peña-Parás ◽  
C. Leyva Leyva ◽  
A. Guerrero ◽  
A. Garza ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Surface Texturing ◽  
Laser Surface ◽  
Laser Surface Texturing

Tribological Properties of Laser Surface Texturing and Molybdenizing Duplex-Treated Ni-Base Alloy

2010 ◽  
Vol 53 (2) ◽  
pp. 195-202 ◽  
Author(s):  
JIANLIANG LI ◽  
DANGSHENG XIONG ◽  
HONGYAN WU ◽  
ZHONGJIA HUANG ◽  
JIHUI DAI ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Base Alloy ◽  
Surface Texturing ◽  
Laser Surface ◽  
Laser Surface Texturing

scholarly journals Polydopamine-Assisted Immobilization of Chitosan Brushes on a Textured CoCrMo Alloy to Improve its Tribology and Biocompatibility

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3014 ◽  
Author(s):  
Liguo Qin ◽  
Hongjiang Sun ◽  
Mahshid Hafezi ◽  
Yali Zhang
Keyword(s):  
Tribological Properties ◽  
Photoelectron Spectroscopy ◽  
Polymer Brushes ◽  
Hydrodynamic Lubrication ◽  
Synergistic Effects ◽  
Surface Texturing ◽  
Laser Surface ◽  
Laser Surface Texturing ◽  
Textured Surface ◽  
Osteoblast Cells

Due to their bioinert and reliable tribological performance, cobalt chromium molybdenum (CoCrMo) alloys have been widely used for articular joint implant applications. However, friction and wear issues are still the main reasons for the failure of implants. As a result, the improvement of the tribological properties and biocompatibility of these alloys is still needed. Thus, surface modification is of great interest for implant manufacturers and for clinical applications. In this study, a strategy combining laser surface texturing and chitosan grafting (mussel inspired) was used to improve the tribological and biocompatible behaviors of CoCrMo. The microstructure and chemical composition were investigated by atomic force microscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy, respectively. The tribological properties were discussed to determine their synergistic effects. To evaluate their biocompatibility, osteoblast cells were cocultured with the modified surface. The results show that there is a distinct synergistic effect between laser surface texturing and polymer brushes for improving tribological behaviors and biocompatibility. The prepared chitosan brushes on a textured surface are a strong mechanism for reducing friction force. The dimples took part in the hydrodynamic lubrication and acted as the container for replenishing the consumed lubricants. These brushes also promote the formation of a local lubricating film. The wear resistance of the chitosan brushes was immensely improved. Further, the worn process was observed, and the mechanism of destruction was demonstrated. Co-culturing with osteoblast cells showed that the texture and grafting have potential applications in enhancing the differentiation and orientation of osteoblast cells.

Influence of Surface Texturing Sequence on Fatigue Life and Tribological Properties of Coated Tool Steel

2018 ◽  
Vol 767 ◽  
pp. 85-92 ◽  
Author(s):  
Marko Sedlaček ◽  
Bojan Podgornik ◽  
Damir Česnik
Keyword(s):  
Fatigue Life ◽  
Tool Steel ◽  
Tribological Properties ◽  
Surface Texturing ◽  
Laser Surface ◽  
Laser Surface Texturing ◽  
Tialn Coating ◽  
Coating Deposition ◽  
Coated Tool ◽  
Before And After

The aim of this study was to investigate the influence of laser surface texturing on fatigue life and tribological properties. Textures were introduced before and after hard TiAlN coating deposition in order to investigate the sequence of surface texturing process. It was found that the sequence of surface texturing has an effect on tribological and fatigue life behaviour. If laser texturing is done after coating deposition, friction is lower because of the better wettability of steel in comparison with coating, but suffers in fatigue life properties.

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