Micro/nanotribology of ultra-thin hard amorphous carbon coatings using atomic force/friction force microscopy

Sundararajan, Sriram; Bhushan, Bharat

doi:10.1016/s0043-1648(99)00024-1

Cited by 111 publications

(38 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In both cases this is due to increasing ploughing contribution to the friction force as the severity of the contact increases. Similar behaviour was observed by Sundararajan and Bhushan in AFM-nanoscratching, where friction coefficients on 3.5-20 nm ultra-thin carbon films were initially 0.04-0.06, which was the same as Si(100) tested under the same conditions, increasing to ~0.1 at the critical load [37,38]. Liu et al reported that graphitic layers at the surface (~3 nm) were responsible for lower friction coefficients of ~0.09 on ta-C than other a-C:H films [39].…”

Section: Discussionsupporting

confidence: 81%

Nano-scratch, nanoindentation and fretting tests of 5–80nm ta-C films on Si(100)

Beake¹,

Davies²,

Liskiewicz³

et al. 2013

Wear

View full text Add to dashboard Cite

Wear and stiction forces limit the reliability of Silicon-based micro-systems when mechanical contact occurs. Ultra-thin filtered cathodic vacuum arc (FCVA) ta-C films are being considered as protective overcoats for Si-based MEMS devices. Fretting, nano-scratch and nanoindentation of different thickness (5, 20 and 80 nm) ta-C films deposited on Si(100) has been performed using spherical indenters to investigate the role of film thickness, tangential loading, contact pressure and deformation mechanism in the different contact situations. The influence of the mechanical properties and phase transformation behaviour of the silicon substrate in determining the tribological performance (critical loads, damage mechanism) of 2 the ta-C film coated samples has been evaluated by comparison with previously published data on uncoated Silicon. The small scale fretting wear occurs at significantly lower contact pressure than is required for plastic deformation and phase transformation in nanoindentation and nano-scratch testing. There is a clear correlation between the fretting and nano-scratch test results despite the differences in contact pressure and failure mechanism in the two tests.In both cases increasing film thickness provides more load support and protection of the Si substrate. Thinner films offer significantly less protection, failing at lower load in the scratch test and more rapidly and/or at lower load in the fretting test.

show abstract

Section: Discussionsupporting

confidence: 81%

Nano-scratch, nanoindentation and fretting tests of 5–80nm ta-C films on Si(100)

Beake¹,

Davies²,

Liskiewicz³

et al. 2013

Wear

View full text Add to dashboard Cite

show abstract

“…Previous tribological studies [131] only focused on the wear properties of films by using tribometers however with the development of advanced experimental methods, the friction, wear, adhesion and lubrication phenomena at the nanoscale, where atomic interactions and quantum effects are not negligible were performed [132,133]. Such advancements also helped in understanding and examining the complex processes present in tribo-corrosion contacts under the subject of wear-corrosion (or tribo-corrosion).The in situ corrosion and post-test analysis methods for the study of the surface film provide with the state-of-the-art tools that can be utilised in tribo-corrosion experimental tests.…”

Section: Tribo-corrosion Degradationmentioning

confidence: 99%

A review of theoretical analysis techniques for cracking and corrosive degradation of film-substrate systems

Nazir

Khan

2017

Engineering Failure Analysis

View full text Add to dashboard Cite

This paper contains a review of the most vital concepts regarding the analysis and design of film systems. Various techniques have been presented to analyse and predict the failure of films for all common types of failure: fracture, delamination, general yield, cathodic blistering, erosive and corrosive wear in both organic and inorganic films. Interfacial fracture or delamination is the loss of bonding strength of film from substrate, and is normally analysed based on the fracture mechanics concepts of bi-material systems. Therefore, keeping the focus of this review on bonding strength, the emphasis will be on the interfacial cracking of films and the corresponding stresses responsible for driving the delamination process. The bi-material characteristics of film systems make the nature of interfacial cracks as mixed mode, with cracks exhibiting various complex patterns such as telephone cord blisters. Such interfacial fracture phenomenon has been widely studied by using fracture mechanics based applicable analysis to model and predict the fracture strength of interface in film systems. The incorporation of interfacial fracture mechanics concepts with the thermodynamics/diffusion concepts further leads to the development of corrosive degradation theories of film systems such as cathodic blistering. This review presents the suggestions for improvements in existing analysis techniques to overcome some of the limitations in film failure modelling. This comprehensive review will help researchers, scientists, and academics to understand, develop and improve the existing models and methods of film-substrate systems.

show abstract

“…The 57 sp 3 /sp 2 ratio, which strongly influences film properties, 58 depends on the hydrogen content of the film and the 59 deposition parameters, such as pressure, ion impinge-60 ment energy, and the surface power density at the sub-61 strate [12,13]. 62 The tribological characteristics of DLC films have 63 been the subject of a large number of investigations 64 because of the high hardness and low friction that these 65 films generally possess [14][15][16][17][18]. A wide range of results 66 has been reported because of differences in methods of 67 synthesis, film structure, and thickness, and test envi-68 ronment and procedures.…”

mentioning

confidence: 99%

Small amplitude reciprocating wear performance of diamond-like carbon films: dependence of film composition and counterface material

et al. 2007

View full text Add to dashboard Cite

Micro/nanotribology of ultra-thin hard amorphous carbon coatings using atomic force/friction force microscopy

Cited by 111 publications

References 16 publications

Nano-scratch, nanoindentation and fretting tests of 5–80nm ta-C films on Si(100)

Nano-scratch, nanoindentation and fretting tests of 5–80nm ta-C films on Si(100)

A review of theoretical analysis techniques for cracking and corrosive degradation of film-substrate systems

Small amplitude reciprocating wear performance of diamond-like carbon films: dependence of film composition and counterface material

Contact Info

Product

Resources

About