Investigation of the tribological properties of the different textured DLC coatings under reciprocating lubricated conditions

Shum, P.W.; Zhou, Zhifeng; Li, K.Y.

doi:10.1016/j.triboint.2013.01.012

Cited by 81 publications

(44 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The results also suggest that LIPSS are beneficial to improving the tribological properties compared with the smooth surface under the starved oil lubrication condition. Some researchers believe that the change in the average friction coefficients depends on the combined effects of adhesion, lubricant reservoirs, and deformation under starved oil lubrication conditions [44,45]. In this study, the average friction coefficient of the textured surfaces with LIPSS was lower than that of the smooth surface.…”

Section: Effect Of Lipss On Friction Properties Under Starved Oil Lubmentioning

confidence: 50%

“…Meanwhile, the ripple structures decrease the metallic adhesion between metal friction pairs, which can be attributed to the reduction in contact area between the nano-textured surface and the ball sample. Therefore, the adhesion effect becomes weaker and the friction coefficient is reduced [44,45]. These effects lead to the reduction of the average friction coefficient of the textured surfaces with LIPSS compared with the smooth surface.…”

Section: Effect Of Lipss On Friction Properties Under Starved Oil Lubmentioning

confidence: 99%

See 1 more Smart Citation

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

2015

View full text Add to dashboard Cite

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.

show abstract

Section: Effect Of Lipss On Friction Properties Under Starved Oil Lubmentioning

confidence: 50%

Section: Effect Of Lipss On Friction Properties Under Starved Oil Lubmentioning

confidence: 99%

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

2015

View full text Add to dashboard Cite

show abstract

“…Surface textures can act as lubricant reservoirs or secondary lubricant source [27,28,[32][33][34]. During sliding of surfaces, this lubricant will be drawn up to permeate the surfaces and can reduce friction, wear and seizer.…”

Section: Lubricant Reservoirmentioning

confidence: 99%

An overview of geometrical parameters of surface texturing for piston/cylinder assembly and mechanical seals

et al. 2015

View full text Add to dashboard Cite

Surface texturing has been effectively used to improve tribological performance of sliding surfaces. Reduction in friction, increase in hydrodynamic load carrying capacity, reduction in wear and increase in fluid film stiffness are few examples of the benefits that can be obtained by surface texturing. In order to obtain these benefits, several researchers have investigated the effects of surface texturing geometrical parameters on the performance of different applications. If these geometrical parameters are not optimized for each application, they may have detrimental effects on their performance. These geometrical parameters in case of micro dimples include depth, diameter, depth to diameter ratio, shape and density of dimples. In this paper, the author reviews the effects of these geometrical parameters on the performance of two applications piston ring/cylinder assembly and mechanical seals.

show abstract

“…In mixed lubrication conditions, this additional lift in hydrodynamic pressure alters the balance between hydrodynamic and boundary lubrication, and consequently, the number of asperities in contact decreases, and friction and wear likewise decrease [16]. In boundary and dry contact lubrication conditions, these craters (dimples or grooves) act as lubricant micro-reservoirs for the continuous retention and supply of lubricant [17], or as micro-containers to capture wear debris and contamination particles so that plowing decreases [18,19]. Consequently, abrasive wear and friction are reduced.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of Grease Friction Properties on Sliding Textured Surfaces

et al. 2017

View full text Add to dashboard Cite

There is comprehensive work on the tribological properties and lubrication mechanisms of oil lubricant used on textured surfaces, however the use of grease lubrication on textured surfaces is rather new. This research article presents an experimental study of the frictional behaviours of grease lubricated sliding contact under mixed lubrication conditions. The influences of surface texture parameters on the frictional properties were investigated using a disc-on-ring tribometer. The results showed that the friction coefficient is largely dependent on texture parameters, with higher and lower texture density resulting in a higher friction coefficient at a fixed texture depth. The sample with texture density of 15% and texture depth of 19 µm exhibited the best friction properties in all experimental conditions because it can store more grease and trap wear debris. The reduction of friction is mainly attributable to the formation of a stable grease lubrication film composed of oil film, transfer film and deposited film, and the hydrodynamic pressure effect of the surface texture, which increases the mating gap and reduces the probability of asperity contact. This result will help in understanding the tribological behaviour of grease on a textured surface and in predicting the lubrication conditions of sliding bearings for better operation in any machinery.

show abstract

Investigation of the tribological properties of the different textured DLC coatings under reciprocating lubricated conditions

Cited by 81 publications

References 15 publications

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

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

An overview of geometrical parameters of surface texturing for piston/cylinder assembly and mechanical seals

Experimental Analysis of Grease Friction Properties on Sliding Textured Surfaces

Contact Info

Product

Resources

About