Nanoindentation-induced deformation behaviour of tetrahedral amorphous carbon coating deposited by filtered cathodic vacuum arc

Haq, Ayesha J; Munroe, Paul; Hoffman, Mark; Martin, Phil; Bendavid, Avi

doi:10.1016/j.diamond.2010.08.014

Cited by 5 publications

(2 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Investigation of the data reported in XTEM studies by Haq and co-workers clearly shows that the influence of indenter geometry is greater than that of coating thickness [38][39][40][41]. In the micro-scratch test the indenter radius was 25 m so compressive strain in the coating should be minimal.…”

Section: Deformation Mechanism In the Scratch Testmentioning

confidence: 99%

Development of DLC coating architectures for demanding functional surface applications through nano- and micro-mechanical testing

Beake

Liskiewicz

Vishnyakov

et al. 2015

Surface and Coatings Technology

View full text Add to dashboard Cite

DLC coatings can combine high hardness with low friction. However, they are often deposited with high levels of intrinsic stress and display low adhesion strength resulting in poor performance in demanding applications. A highly topical challenge is to develop advanced DLC coatings capable of withstanding more demanding applications in the automotive, cutting tools, MEMS and oil and gas sectors. The results from several nanomechanical and tribological test techniques -nanoindentation, nano-scratch and nanofretting (nano-wear) -can be used together to aid the design of DLC coating architectures for enhanced durability in specific applications. In this study the behaviour of multilayered DLC coatings (Cr/W-C:H/a-C:H, Cr/W-C:H/Si-a-C:H) was compared to that of CrN/a-C:H:W (WC/C). We have previously reported that in nano-wear tests the coating with the highest hardness and H/E displayed greater wear resistance [T.W. Liskiewicz et al, Surf. Coat.Technol. 237 (2013) 212]. By employing nano-and micro-scale tribological testing with probes of differing sharpness it is possible to change the sensitivity of the test to probe the response of the coating top layer or the entire multilayer coating-substrate system. In the nano-scratch tests using a spherical indenter with a 5 m end radius the maximum stresses are located well within the top layer of the multilayer coatings and consequently the mechanical properties of this top layer dominate the nano-tribological behaviour. In the micro-scratch using a 25 m spherical probe the stress field extends further towards the sublayers and steel substrate and consequently the behaviour is completely different. Under these conditions the coating with the lowest hardness and H/E showed improved performance with higher critical loads for cracking and total coating failure. High resolution SEM imaging has been used to investigate this further. A simple contact model strongly suggests that cracking and failure events occur on the harder coatings when the maximum von Mises stress was located close to the interfaces in the multilayer systems.3

show abstract

Section: Deformation Mechanism In the Scratch Testmentioning

confidence: 99%

Development of DLC coating architectures for demanding functional surface applications through nano- and micro-mechanical testing

Beake

Liskiewicz

Vishnyakov

et al. 2015

Surface and Coatings Technology

View full text Add to dashboard Cite

show abstract

“…Besides, the deposition methods determine its nature of DLC film. Usually, superhard tetrahedral carbon (ta‐C) film is grown by filtered cathodic vacuum arc (FCVA), 12,13 hydrogenated tetrahedral amorphous carbon (ta‐C:H) film is obtained via electron cyclotron wave resonance (ECR) plasma system, 14 and (hydrogenated) amorphous carbon (a‐C:(H)) films are deposited from plasma assistant chemical vapor deposition (PECVD) 15–18 and magnetron sputtering technology 16 . Among them, magnetron sputtering, due to its less equipment requirements, low cost and more flexibility, has been taken more attention via science and engineering 17 .…”

Section: Introductionmentioning

confidence: 99%

Achieving ultra‐low friction of a‐C:H film grown on 9Cr18Mo steel for industrial application via programmable high power pulse magnetron sputtering

Sun

Jia

Zhang

et al. 2021

Surface & Interface Analysis

View full text Add to dashboard Cite

Owing to the high hardness and hydrogen passivation of carbon bonds, hydrogenated diamond‐like carbon (a‐C:H) film has shown promising potential to achieve ultra‐low friction and wear on steel surfaces. Here, a‐C:H film was successfully deposited on 9Cr18Mo steel via programmable high power pulse magnetron sputtering and potential application for industrial was evaluated. The a‐C:H films against different mating materials of GCr15 steel balls, Al2O3, Si3N4, ZrO2, and a‐C:H‐coated GCr15 balls all showed ultra‐low friction under a normal load of 5 N in a dry ambient air environment. Among them, self‐mating tribo‐system a‐C:H films on steel surfaces and a‐C:H‐coated steel balls achieve best friction performance; the principal reason is that both contacting surfaces coated with a‐C:H film have the lower electron affinities compared with other tribo‐systems. However, the differences of coefficient of friction (COF) for uncoated‐GCr15, Al2O3, ZrO2, Si3N4, and a‐C:H(GCr15) balls can be attributed to different sizes of clustering in wear debris. This work provides new insights on synthesis and industry application of the a‐C:H films with ultra‐low friction properties.

show abstract

Comparative study on the effects of oil viscosity on typical coatings for automotive engine components under simulated lubrication conditions

Kong

Zhang

et al. 2021

Diamond and Related Materials

View full text Add to dashboard Cite

Nanoindentation-induced deformation behaviour of tetrahedral amorphous carbon coating deposited by filtered cathodic vacuum arc

Cited by 5 publications

References 61 publications

Development of DLC coating architectures for demanding functional surface applications through nano- and micro-mechanical testing

Development of DLC coating architectures for demanding functional surface applications through nano- and micro-mechanical testing

Achieving ultra‐low friction of a‐C:H film grown on 9Cr18Mo steel for industrial application via programmable high power pulse magnetron sputtering

Comparative study on the effects of oil viscosity on typical coatings for automotive engine components under simulated lubrication conditions

Contact Info

Product

Resources

About