Friction induced phase transformation of pulsed laser deposited diamond-like carbon

Voevodin, Andrey A.; Phelps, A. W.; Zabinski, J.S.; Donley, M.S.

doi:10.1016/0925-9635(96)00538-9

Cited by 241 publications

(106 citation statements)

References 29 publications

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“…transformation of a-C:15H could occur at a much lower temperature when subjected to high pressure (stressed-induced graphitisation) [14]. Generation of ferrous wear particles from the worn CI counterbody along with the scratches with positive edges on the surface, decrease the contact area and increase the contact pressure significantly.…”

Section: Eqmentioning

confidence: 99%

“…Having a graphite-like structure through transferring worn materials from the a-C:15H coating to the interface could significantly reduce friction in dry conditions [13][14][15]. Graphitisation could be initiated by high temperature (400 o C) causing the hydrogen to be diffused out of the a-C:15H matrix which in return results in collapse of the random covalent structure of a-C:15H and provide a graphitic layer.…”

Section: Effect Of Oil Chemistry On Coating Delaminationmentioning

confidence: 99%

“…The pin surface will then be protected from being worn off while the a-C:15H slides over the transfer layer. It should be noted that transfer layer has low shear strength and is progressively removed from the surface [14]. Increasing graphitisation and removal and transfer of materials to the counterbody with time will lead to gradual thinning of the a-C:15H coating which in return will decrease the load bearing capability of the a-C:15H coating.…”

Section: Eqmentioning

confidence: 99%

“…The graphitisation of DLC plays an important role in friction reduction under dry sliding conditions [13][14][15]. Under tribological conditions, usually, the softer of the two materials will be worn while this is not the case for DLC.…”

Section: Introductionmentioning

confidence: 99%

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Tribological performance and tribochemical processes in a DLC/steel system when lubricated in a fully formulated oil and base oil

Kosarieh

Morina

Lainé

et al. 2013

Surface and Coatings Technology

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Abstract:Diamond-like carbon (DLC) coatings show extremely good promise for a number of applications in automotive components as they exhibit excellent tribological properties such as low friction and good wear resistance. This can impact on improved fuel economy and durability of the engine components. Much work has been reported on the dry sliding of DLC coatings with less so in lubricated contacts and, as such, there is a need to further understand the tribochemistry of lubricated DLC contacts. Commercially-available oils are normally optimized to work on ferrous surfaces. Previous studies on DLC lubricated contacts have tended to use model oil systems rather than fully formulated lubricants and from this an interesting picture of lubrication mechanisms is emerging. Optimising compatibility between a surface and a set of lubricant additives may lead to excellent durability (wear) as well as increased fuel economy (low friction). In this work, the friction and wear properties of a DLC coating under boundary lubrication conditions have been investigated and the tribological performance compared with that of an uncoated steel system. A pin-on-plate tribotester was used to run the experiments using High speed steel (HSS) M2 grade plates coated with 15 at.% hydrogenated DLC (a-C:15H) sliding against cast iron pins. A Group III mineral base oil, fully synthetic Group IV PAO and four different fully formulated oils were used in this study. Furthermore optical and scanning electron microscopes (SEM) were used to observe the wear scar and to assess the durability of the coatings. Energy-Dispersive X-ray analysis (EDX), X-ray Photoelectron Spectroscopy (XPS) and Raman spectroscopy analyses were performed on the tribofilms to understand the tribochemical interactions between oil additives and the a-C:15H coating.This study show that the durability of the a-C:15H coating strongly depends on the selected additive package in the oils. In addition the effect of detergent, dispersant and antioxidants on the performance of the Molybdenum-based friction modifier (Mo-FM) and ZDDP anti-wear additive were investigated and results are reported in this paper.

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Section: Eqmentioning

confidence: 99%

Section: Effect Of Oil Chemistry On Coating Delaminationmentioning

confidence: 99%

Section: Eqmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Tribological performance and tribochemical processes in a DLC/steel system when lubricated in a fully formulated oil and base oil

Kosarieh

Morina

Lainé

et al. 2013

Surface and Coatings Technology

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“…These include ion beam deposition [16], pulsed laser ablation [17] and ion beam conversion [18]; each method can be used to create desirable coating properties. For example ion beam conversion can be used to dope DLC coatings with elements such as sulphur, fluorine or nitrogen that serve to reduce friction [19].…”

Section: Production and Depositionmentioning

confidence: 99%

Diamond like carbon coatings for potential application in biological implants—a review

Love

Cook

Harvey

et al. 2013

Tribology International

229

118

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a b s t r a c tProduction of wear debris has been linked to the failure of numerous hip implants. With the current focus on increasing the implant longevity, thus wear and corrosion resistance is important. Hard coatings have the potential to reduce the wear and corrosion. Diamond like Carbon (DLC) coatings exhibit properties that could make them viable for implants. This paper critically reviews previously published research into usage of DLC coatings for implants. Overall DLCs seem to be an effective coating for implants but with the variance in results, further testing is required for clarification of use.

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Biomaterials, Corrosion and Wear of

Narayan

Marek

Jin

2006

Encyclopedia of Medical Devices and Instrumentation

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Many materials suffer degradation with time when exposed to aggressive chemical environments within the human body. In metallic biomaterials, degradation results from electrochemical corrosion. Ceramic and polymeric biomaterials may undergo physical or chemical deterioration processes. In addition, mechanical forces may act to increase damage by wear, abrasion, or environment‐induced cracking processes.

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Friction induced phase transformation of pulsed laser deposited diamond-like carbon

Cited by 241 publications

References 29 publications

Tribological performance and tribochemical processes in a DLC/steel system when lubricated in a fully formulated oil and base oil

Tribological performance and tribochemical processes in a DLC/steel system when lubricated in a fully formulated oil and base oil

Diamond like carbon coatings for potential application in biological implants—a review

Biomaterials, Corrosion and Wear of

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