Nanomechanical Characterization of Carbon Films

Beake, Ben D.; Liskiewicz, Tomasz

doi:10.1002/9781119084501.ch2

Cited by 7 publications

(2 citation statements)

References 134 publications

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“…Plasma assisted CVD (PACVD) deposited films typically have greater levels of hydrogen content (up to 60 %) [3,6]. DLC films see many practical applications across industry including razor blades, MEMs devices, cutting tools and as protective coatings for mechanical combustion engines [1,3,15]. More recently, DLC coatings have been seen as a potential protective coatings of flow control devices in oil and gas pipelines [16].…”

Section: Introductionmentioning

confidence: 99%

Probing fatigue resistance in multi-layer DLC coatings by micro- and nano-impact: Correlation to erosion tests

McMaster

Liskiewicz

Neville

et al. 2020

Surface and Coatings Technology

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DLC coatings have seen recent use as protective coatings for flow control devices in the oil and gas industries. Improving fatigue resistance for multi-layered DLC coatings on hardened steel is key for improving their performance in this harsh environment of highly loads repetitive contact. This has been studied directly by micro-scale repetitive impact tests at significantly higher strain rate and energy than in the nano-impact test, enabling the study of coating fatigue with spherical indenters and dry erosion testing. Nano-impact has also been used to assess the initial fatigue behaviour of the coatings. Good correlation between microimpact results and erosion results was found. Hard multi-layered a-C:H and Si-a-C:H coatings were found to be significantly less durable under fatigue loading than a-C:H:W. The influence of the coating mechanical properties and structure on these differences is discussed.The results of this study provide further strong evidence that in highly loaded mechanical contact applications requiring a combination of load support and resistance to impact fatigue, the optimum lifetime of coated components may be achieved by designing the coating system to combine these properties rather than by solely aiming to maximise coating hardness as this may be accompanied by brittle fracture and higher wear.

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Section: Introductionmentioning

confidence: 99%

Probing fatigue resistance in multi-layer DLC coatings by micro- and nano-impact: Correlation to erosion tests

McMaster

Liskiewicz

Neville

et al. 2020

Surface and Coatings Technology

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“…Dips in the lateral force graph can correspond to intermittent failures within the film, such as micro-cracks, chipping, or partial delamination events. Each dip reflects a sudden change in resistance as these events occur, momentarily reducing the lateral force required to move the indenter [56,57].…”

Section: Nano Scratch Testmentioning

confidence: 99%

Influence of topography on nano-mechanical properties of cylindrical magnetron sputtered TiN films

Atta,

Mathew,

Dash

et al. 2024

Surf. Topogr.: Metrol. Prop.

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Numerous studies on Nano-mechanical behavior of the thin films explained primarily in terms of their film morphology and particle size rather than film topography. Therefore, the current study investigates the effect of film topography on the nano-mechanical characteristics of the film. Ti/TiN multilayer thin films were deposited at varying deposition pressures by using an indigenously developed Cylindrical Magnetron Sputtering (CMS) unit. Surface crystallographic information is characterized by synchrotron-based Grazing Incidence XRD analysis. Film growth follows self-assembled nano hill architecture as revealed by AFM and in-situ Scanning Probe Microscopy images. The tribo-mechanical properties of the film is dependent on the height and spacing of its self-assembled structure, which experiences either crushing or buckling under the indenter load, thereby affecting film characteristics. Film deposited at moderate pressure exhibits superior wear behavior, attributed to the interplay between Plasticity Index (PI) and Depth Recovery Ratio (DRR). The study primarily focused on film growth phenomena by using cylindrical targets and their influence on nanomechanical properties of the film.

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Elevated temperature nanomechanics of coatings for high-temperature applications: a review

Beake

2021

emergent mater.

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Nanomechanical Characterization of Carbon Films

Cited by 7 publications

References 134 publications

Probing fatigue resistance in multi-layer DLC coatings by micro- and nano-impact: Correlation to erosion tests

Probing fatigue resistance in multi-layer DLC coatings by micro- and nano-impact: Correlation to erosion tests

Influence of topography on nano-mechanical properties of cylindrical magnetron sputtered TiN films

Elevated temperature nanomechanics of coatings for high-temperature applications: a review

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