Characteristics and tribological performance of DLC and Si-DLC films deposited on nitrile rubber

Lubwama, Michael; McDonnell, Kevin; Kirabira, John Baptist; Sebbit, Adam; Sayers, K.; Dowling, Denis P.; Corcoran, Brian

doi:10.1016/j.surfcoat.2012.05.015

Cited by 50 publications

(57 citation statements)

References 35 publications

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“…Generally, with increase in contact angle, the surface energy reduces and friction coeffcient is less. 61 But in the present results, the low friction coefficient does not follow the behaviour of low surface energy. This indicates the dominant role of friction coefficient derived by a-C/sp 2 and ta-C ratio in the film.…”

Section: F Friction Behavior Of Dlc Filmscontrasting

confidence: 93%

Impact of laser power density on tribological properties of Pulsed Laser Deposited DLC films

et al. 2013

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Fabrication of wear resistant and low friction carbon films on the engineered substrates is considered as a challenging task for expanding the applications of diamond-like carbon (DLC) films. In this paper, pulsed laser deposition (PLD) technique is used to deposit DLC films on two different types of technologically important class of substrates such as silicon and AISI 304 stainless steel. Laser power density is one of the important parameter used to tailor the fraction of sp2 bonded amorphous carbon (a-C) and tetrahedral amorphous carbon (ta-C) made by sp3 domain in the DLC film. The I(D)/I(G) ratio decreases with the increasing laser power density which is associated with decrease in fraction of a-C/ta-C ratio. The fraction of these chemical components is quantitatively analyzed by EELS which is well supported to the data obtained from the Raman spectroscopy. Tribological properties of the DLC are associated with chemical structure of the film. However, the super low value of friction coefficient 0.003 is obtained when the film is predominantly constituted by a-C and sp2 fraction which is embedded within the clusters of ta-C. Such a particular film with super low friction coefficient is measured while it was deposited on steel at low laser power density of 2 GW/cm2. The super low friction mechanism is explained by low sliding resistance of a-C/sp2 and ta-C clusters. Combination of excellent physical and mechanical properties of wear resistance and super low friction coefficient of DLC films is desirable for engineering applications. Moreover, the high friction coefficient of DLC films deposited at 9GW/cm2 is related to widening of the intergrain distance caused by transformation from sp2 to sp3 hybridized structure.

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Section: F Friction Behavior Of Dlc Filmscontrasting

confidence: 93%

Impact of laser power density on tribological properties of Pulsed Laser Deposited DLC films

et al. 2013

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“…Owing to the high level of internal stresses, DLC films have a tendency to show weak adhesion, thereby limiting their deposition thickness and field of applications [4,5]. The incorporation of other elements (like Cr, Ti or Si) into the DLC films provides an effective way to improve their properties [6][7][8][9][10]. Numerous research reports show that the formation of the carbide phase in the DLC film is useful to improve the mechanical property, but the wear behavior was deteriorated [11].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and properties of (Cr:N)-DLC films deposited by a hybrid beam technique

Yang

Guo

et al. 2015

Surface and Coatings Technology

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“…The film is mainly amorphous carbon consisting of a network of sp 3 and sp 2 bonded carbon atoms. Without transition layer or element doping, DLC film is very easy to spall from the most of metal substrates because of the high intrinsic compressive stress [2].…”

Section: Introductionmentioning

confidence: 99%

“…Without transition layer or element doping, DLC film is very easy to spall from the most of metal substrates because of the high intrinsic compressive stress [2]. Metal-doped DLC films have been substantially studied recently due to their superior toughness, thermal stability, excellent tribological properties as well as relatively lower residual stresses than that of pure DLC films [3][4][5][6][7]. It is accepted that the metal atoms doped into the DLC matrix can form nano-clusters by bonding with carbon atoms and these nanostructure embedded in the DLC matrix will significantly affect the hardness and tribological properties of the resulting DLC coatings [8,9].…”

Section: Introductionmentioning

confidence: 99%

Effects of Cr concentrations on the microstructure, hardness, and temperature-dependent tribological properties of Cr-DLC coatings

Zou¹,

Wang²,

Liu³

et al. 2013

Applied Surface Science

123

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Characteristics and tribological performance of DLC and Si-DLC films deposited on nitrile rubber

Cited by 50 publications

References 35 publications

Impact of laser power density on tribological properties of Pulsed Laser Deposited DLC films

Impact of laser power density on tribological properties of Pulsed Laser Deposited DLC films

Microstructure and properties of (Cr:N)-DLC films deposited by a hybrid beam technique

Effects of Cr concentrations on the microstructure, hardness, and temperature-dependent tribological properties of Cr-DLC coatings

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