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

Dufils, Johnny; Faverjon, Frédéric; Héau, Christophe; Donnet, Christophe; Benayoun, Stéphane; Valette, S.

doi:10.1016/j.surfcoat.2017.09.028

Cited by 44 publications

(21 citation statements)

References 31 publications

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“…Indirect structuring refers to a textured surface that is subsequently coated with DLC, while direct structuring refers to the texturing of the DLC coating itself [191]. LST has been the most widely used technique for DLCs, for both indirect texturing [117,[194][195][196][197][198][199][200][201][202][203][204][205][206] and direct texturing [118,124,[207][208][209][210][211].…”

Section: Diamond-like Carbon and Surface Texturesmentioning

confidence: 99%

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Synergetic effects of surface texturing and solid lubricants to tailor friction and wear – A review

Rosenkranz

Costa

Baykara

et al. 2021

Tribology International

314

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Surface texturing and solid lubricants have demonstrated the ability to substantially reduce friction and wear under dry conditions. In recent decades, these two technologies have been combined to leverage the advantages of both for superior tribological performance. This review article first summarizes the state-of-the-art regarding surface texturing and solid lubricants, including soft metals, polytetrafluoroethylene, diamond-like carbon and 2D layered materials. Then, the synergy between surface textures and solid lubricants is discussed, with particular emphasis on the underlying mechanisms. Finally, gaps in the existing understanding of these synergies are identified and opportunities for future research are suggested.

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Section: Diamond-like Carbon and Surface Texturesmentioning

confidence: 99%

“…However, as the test evolved, both smooth and textured DLC coatings exhibited intense delamination due to the large mismatch in hardness between substrate and coating. Therefore, surface texturing was not able to sufficiently improve the durability of hard DLC deposited onto soft PEEK [202].…”

Section: Indirect Structuring Of Dlcmentioning

confidence: 99%

Synergetic effects of surface texturing and solid lubricants to tailor friction and wear – A review

Rosenkranz

Costa

Baykara

et al. 2021

Tribology International

314

View full text Add to dashboard Cite

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“…They reported a 24% reduction in friction coefficient compared to a flat DLC surface. Dufils et al [18] evaluated the mechanical and tribological performances of PEEK surfaces modified via LST combined with a DLC coating. They evidenced a coefficient of friction that decreased with increasing dimple density, probably because of wear debris trapping.…”

Section: Introductionmentioning

confidence: 99%

“…Experimental results showed that laser-textured surfaces significantly reduced the wear volume by up to 57%, especially for surface patterns with micro-grids. Moreover, in most of the studies, the surface was first textured by a laser and then coated; however, this led to a modification of the substrate properties due to the interaction with the laser beam [17][18][19][20][21][22][23][24]. On the contrary, works where LST was designed after the coating realized texture that was thicker than the coating depth [16].…”

Section: Introductionmentioning

confidence: 99%

Laser Surface Texturing to Realize Micro-grids on DLC Coating: Effect of Marking Speed, Power, and Loop Cycle

Giorleo

Montesano

Vecchia

2021

Int. J. Precis. Eng. Manuf.

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In the present study, laser surface texturing was tested with the aim of improving the tribological properties of a diamond-like carbon (DLC) coating. Two experimental campaigns were designed to realize different micro-grids, and to study the effect of marking speed, laser power, and loop cycle. The grid profiles obtained were analyzed using a digital microscope and a laser probe system to measure the track cross section. At the end of the experiments, the authors identified a good-quality track obtained by imposing a marking speed of 300 mm/s, a power of 0.5 W, and one loop cycle. For the identified condition, the presence of defects (such as cracks) on both the coated surface and at the substrate/coating interface was analyzed. Furthermore, the coating nanohardness, adhesion to the substrate, and wear behavior in dry condition were investigated. The results underline how laser texturing can improve the DLC wear behavior (wear tracks lower than 30%) without considerably affecting the other tested coating properties.

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“…LST was successfully employed by the automotive industry to treat cylinder liners of internal combustion engines and thus to improve fuel consumption and reduce engine wear [12]. It was also employed as a mean of reducing friction and wear between other types sliding surfaces such as PTFE/Kevlar fabric composites [13], polymers [14], and more [15]. More recently LST found applications in medical industry, specifically to modify surfaces of orthopedic implants.…”

Section: Introductionmentioning

confidence: 99%

Effects of laser processing conditions on wettability and proliferation of Saos-2 cells on CoCrMo alloy surfaces

Batal

Michalek

García‐Girón

et al. 2019

Advanced Optical Technologies

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Any processing disturbances in laser surface texturing (LST) could compromise the resulting surface topography and their desired functional response. Disturbances such as focal plane offsets and beam incident angle variations are always present in LST processing of 3D parts and can affect the surface morphology. In this research the effects of these laser processing disturbances in producing laser induced surface structures (LIPSS) on CoCrMo alloy substrates were investigated. In particular, these two disturbances were considered as laser processing variables to determine their effects on functional responses of LIPSS treated surfaces, i.e. surface wettability and the proliferation of Saos-2 osteoblast-like cells were evaluated. It was found that the changes of laser processing conditions led to a decrease in surface wettability and Saos-2 cells proliferation. In addition, a correlation between surface wettability and cell proliferation on LIPSS treated surface was identified and conclusions made about the effects of investigated process disturbances on the functional response of LIPSS treated CoCrMo substrates.

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

Cited by 44 publications

References 31 publications

Synergetic effects of surface texturing and solid lubricants to tailor friction and wear – A review

Synergetic effects of surface texturing and solid lubricants to tailor friction and wear – A review

Laser Surface Texturing to Realize Micro-grids on DLC Coating: Effect of Marking Speed, Power, and Loop Cycle

Effects of laser processing conditions on wettability and proliferation of Saos-2 cells on CoCrMo alloy surfaces

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