Role of the Transfer Film on the Friction and Wear of Metal Carbide Reinforced Amorphous Carbon Coatings During Run-in

Scharf, Thomas; Singer, I. L.

doi:10.1007/s11249-009-9457-z

Cited by 113 publications

(52 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The sand particles thus become lost in the ridge and could not cause further abrasion [25]. Scharf and Singer [26] indicated that the wear loss of the coatings were independent of counterbody material, it is clear that friction and wear were controlled by the transfer film formed on couterbody, and not by the counterbody. Therefore, the formation of the ridge on the contact area could be the main reason for such low wear rate and friction coefficient of a-C:H film under sand-dust conditions.…”

Section: The Worn Surface Morphologies Of A-c:h Film and Counterbody Pinmentioning

confidence: 99%

Ultra-High Tribological Performance of Magnetron Sputtered a-C:H Films in Sand-Dust Environment

Wang

Yan

et al. 2010

Tribol Lett

View full text Add to dashboard Cite

The hydrogenated amorphous carbon (a-C:H) films were prepared on AISI 440C steel substrates using a RF magnetron sputtering graphite target in the CH 4 and Ar mixture atmosphere. The friction and wear behavior of a-C:H films were comparatively investigated by pin-ondisc tester under dry sliding and simulated sand-dust wear conditions. In addition, the effects of applied load, amount of sand and sand particle sizes on the tribological performance of a-C:H films were systemically studied. Results show that a-C:H films exhibited ultra-high tribological performance with low friction coefficient and ultra-low wear rate under sand-dust environments. It is very interesting to observe that the friction coefficient of a-C:H film under sand-dust conditions was relatively lower when compared with dry sliding condition, and the wear rate under sand-dust conditions kept at the same order of magnitude (910 -19 m 3 /N m) with the increase of applied load and particle size as a comparison with the dry sliding condition. Based on the formation of ''ridge'' layer (composite transfer layer), a transfer layer-hardening composite model was established to explain the anti-wear mechanisms and friction-reducing capacity of a-C:H solid lubrication films under sand-dust conditions.

show abstract

Section: The Worn Surface Morphologies Of A-c:h Film and Counterbody Pinmentioning

confidence: 99%

Ultra-High Tribological Performance of Magnetron Sputtered a-C:H Films in Sand-Dust Environment

Wang

Yan

et al. 2010

Tribol Lett

View full text Add to dashboard Cite

show abstract

“…3 The velocity accommodation modes of a transfer layer; (a) shear and extrusion of debris, and (b) interfacial sliding, based on Refs. [43,44]. now focus on the friction of DLC coatings in a water environment, to examine the potential for the use of DLC coatings on components under aqueous lubrication.…”

Section: Transfer Layer Formationmentioning

confidence: 99%

The friction of diamond-like carbon coatings in a water environment

et al. 2013

View full text Add to dashboard Cite

Diamond-like carbon (DLC) coatings are known to provide beneficial mechanical and tribological properties in harsh environments. Their combination of high wear resistance and low friction has led to their extensive use in any number of industries. The tribological performance of a DLC coating is varied however, and the frictional response is known to be strongly dependent on the surrounding environment, as well as the material composition and bonding structure of the DLC coating. This paper presents an up-to-date review on the friction of DLC coatings in a water environment, with a special focus on transfer layer formation and tribochemistry.

show abstract

“…The fall in friction occurs as a transfer layer forms in the contact composed of worn debris from the DLC coating and steel ball. The mechanism for this has been described by Scharf and Singer [20,24]. The coefficient of friction increases again as the wear debris reacts with oxidative species in the environment, resulting in higher adhesion.…”

Section: Friction and Wearmentioning

confidence: 93%

Interpreting the effects of interfacial chemistry on the tribology of diamond-like carbon coatings against steel in distilled water

Sutton

Limbert

Burdett

et al. 2013

Wear

View full text Add to dashboard Cite

Three commercially available Diamond-Like Carbon (DLC) coatings were investigated to help understand the dynamics of transfer layer formation and decay, when sliding against AISI 52100 steel balls in distilled water.Optimum tribological behaviour was observed during interfacial sliding between the transfer layer and DLC coating. Alternatively, shear of the carbonaceous transfer layer from the contact region resulted in growth of an iron oxide layer comprised of magnetite, maghemite and hematite, as identified by Raman spectra. Threebody abrasive wear involving iron oxide wear particles explained the high wear rate of the DLC coatings in the case of shear.Friction was controlled by the formation of a transfer layer, reducing adhesive interactions between surfaces.Subsequently, a gradual increase in friction was observed, and suggested to relate to an increase in the shear strength of the transfer layer due to adsorption of oxidative species. This was modelled using the Elovich equation for gas adsorption kinetics.

show abstract

Role of the Transfer Film on the Friction and Wear of Metal Carbide Reinforced Amorphous Carbon Coatings During Run-in

Cited by 113 publications

References 43 publications

Ultra-High Tribological Performance of Magnetron Sputtered a-C:H Films in Sand-Dust Environment

Ultra-High Tribological Performance of Magnetron Sputtered a-C:H Films in Sand-Dust Environment

The friction of diamond-like carbon coatings in a water environment

Interpreting the effects of interfacial chemistry on the tribology of diamond-like carbon coatings against steel in distilled water

Contact Info

Product

Resources

About