Experimental investigation of tribological properties of laser textured tungsten doped diamond like carbon coating under dry sliding conditions at various loads

Ahmed, Arslan; Masjuki, H.H.; Quazi, M. M.; Kalam, M.A.; Varman, M.; Jamshaid, Muhammad; Rahman, Md. Saifur; Imran, Muhammad; Zulfattah, Z. M.; Anwar, Muhammad Tuoqeer; Gohar, Ghulam Abbas; Mandalan, S. M.; Harith, M. H.

doi:10.1088/2053-1591/ab408c

Cited by 8 publications

(9 citation statements)

References 53 publications

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“…In contrast, the textured DLC films exhibited narrower and shallower wear tracks [232]. As previously hypothesized by Arslan et al for DLC films [205], the authors suggested that wear debris in the contact could induce graphitization [232]. GLC has also been deposited onto hard textured Si substrates, resulting in more stable friction and lower wear than smooth GLC [233].…”

Section: Indirect Structuring Of Dlcmentioning

confidence: 61%

“…For textured DLC, the textures remove the wear debris from the contact, reducing graphitization. The difference between these two studies may lie in the texture depth, which was substantially larger in He's work (25 µm) [198] than in Arslan's work (6-8 µm), resulting in more intense stress concentrations [205]. Further, W-DLC is harder than undoped DLC, and the film was deposited onto a substantially harder substrate (hardened steel compared to a titanium alloy) in Arslan's work [205].…”

Section: Indirect Structuring Of Dlcmentioning

confidence: 95%

“…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%

“…For high area coverages (44%), the wear rates were higher than for smooth DLC, probably due to the reduced bearing capacity and excessive softening resulting from the graphitized layer [198]. For DLC coatings doped with tungsten (W-DLC), Arslan et al found that texturing of a hardened steel substrate led to reduced friction and entrapment of wear debris [205]. However, contrary to the suggestion in He's work, Raman spectroscopy revealed higher graphitization for the smooth DLC than for the textured DLC.…”

Section: Indirect Structuring Of Dlcmentioning

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

313

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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: Indirect Structuring Of Dlcmentioning

confidence: 61%

Section: Indirect Structuring Of Dlcmentioning

confidence: 95%

Section: Diamond-like Carbon and Surface Texturesmentioning

confidence: 99%

Section: Indirect Structuring Of Dlcmentioning

confidence: 99%

See 2 more Smart Citations

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

Rosenkranz

Costa

Baykara

et al. 2021

Tribology International

313

View full text Add to dashboard Cite

show abstract

“…NMR spectroscopy technique is used to determine the hardness as well as elastic modulus of DLC coating [96,103]. Scratch testing technique is used to find the adhesion of DLC coating, Feld emission scanning electron microscopy (FESEM), x-ray diffraction and scanning electron microscopy (SEM) are post process techniques and used to find the wear profile and wear scar diameter [7,26,96,97,104,[107][108][109]. Raman spectroscopy is used to determine the structural properties after tribotesting.…”

Section: Characteristics Of Dlc Coatingsmentioning

confidence: 99%

A Review on Tribological Study of DLC Coatings in Combination with Bio Based Lubricants

Hanif¹,

Zahid²,

Mufti³

et al. 2021

IJMSA

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In past few years DLC coatings and bio based lubricants have gained significant attraction due to their excellent tribological properties. Biolubricants showed synergetic behavior with contact surfaces, when used as a lubricant. Reason behind the attraction towards biolubricants is that they are renewable and biodegradable source of energy. The dominant properties of biolubricants are high flash point, less coefficient of friction, good wear resistance, high viscosity index, lower toxicity and high biodegradability. On the other hand, diamond like carbon (DLC) coatings have also gained attraction due to their excellent tribological properties which enables them to reduce the COF and wear of contact surfaces. In literature, many experimental studies have been carried out by researchers on DLC coating and biolubricants to analyze their interaction. Although biolubricants are not much applying in practical tribology fields but their properties are significant as compared to conventional synthetic lubricants. In this review paper, data from past few years published papers have been arranged in an organized manner to study the interaction of DLC coatings with biolubricants. Most widely used DLC coatings (W-DLC, a-C:H DLC, ta-C DLC) and biolubricants (palm oil, coconut oil, canola oil, sunflower oil, jatropha oil and rapeseed oil) were considered for this study. Tribological performance of symmetric (DLC) contacts and asymmetric (DLC and steel) contacts with biolubricants have been analyzed by comparing the average values of coefficient of friction and coefficient of wear. Synergetic behavior was obtained when biolubricants were used with symmetric DLC coated contact while tribological results were not much effective in case of asymmetrical contact of DLC coatings and steel.

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Femtosecond laser texturing of DLC-based coatings by DLW method with sub-micrometer precision

Čermák

Simonovic

Бондарев

et al. 2022

Int J Adv Manuf Technol

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The enhancement of functional surfaces by laser texturing has been investigated in many studies; however, it has been often applied to the substrate. New laser technologies, such as the direct laser writing (DLW) method using a femtosecond laser, allow the production of extremely precise textures into both substrates and thin lms. This paper investigates two distinct methods producing various textures:(i) the substrate is textured before the deposition of the diamond-like carbon coating (DLC), and (ii) the texture is produced into DLC coating deposited on a polished substrate. Our goal was to achieve identical topography in both cases; the textured area was as large as 170 mm 2 . The textured topography was assessed by 3D laser scanning microscope, which con rmed the repeatability of fs laser processing. Raman spectroscopy mapping, SEM, and XPS were combined to investigate the effect of laser processing on DLC coating in terms of oxidation or structural changes. 1. Introduction Many industrial areas face various pressure such as cost-effectiveness, environmental aspects, substitutability of different technologies and its consequent exibility of change. Surface treatments, namely surface texturing by ultra-short pulsed (USP) lasers has been already used in many industrial elds: in the cutting tool industry [1] to improve the cutting process, in piston rings [2], dies preparations for metal forming [3], in bearings [4] for friction reduction; and in other elds such as biomedical equipment [5] or storage devices [6]. Many scienti c papers [7]-[13] dealt with laser surface texturing of DLC coatings, which consisted of dimple shapes limited by applied laser spots from d = 10µm [12] up to 30µm [8] in rectangular/square patterns. The performed experiments showed the coe cient of friction (CoF) reduction when using ultrashort pulsed laser processing [8], [11],[13], instead of short-pulsed laser processing [14], where the heataffected zone (HAZ) seems to be limiting improvement in tribological properties. Other studies [15]-[17] aimed to fabricate different textures, e.g., squares, lines, or circles in many possible patterns.These studies were mainly focused on the impact of various densities of geometrical entities, but not on the achieved depth of textures, which did not allow a proper insertion of laser texturing into various places of the technological production chain. In the study of Dumitru et al. [10], laser texturing was performed in two variants: into the substrate before deposition of DLC coating and after the deposition.However, the depths of the texture were not provided.This study focuses on the fabrication of textures with de ned geometrical entities and conditions by ultra-short pulsed (USP) laser system tuned to a pulsed length of 240fs. Our main goal is to compare the feasibility of two texturing processes. In the rst case, designed textures were micromachined directly into the substrate (tool steel 1.2379) and then the samples were deposited by DLC coating (hereinafter textured-coated). In the second...

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Experimental investigation of tribological properties of laser textured tungsten doped diamond like carbon coating under dry sliding conditions at various loads

Cited by 8 publications

References 53 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

A Review on Tribological Study of DLC Coatings in Combination with Bio Based Lubricants

Femtosecond laser texturing of DLC-based coatings by DLW method with sub-micrometer precision

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