Friction and wear of ion-plated soft metallic films

Sherbiney, M.A.; Halling, J.

doi:10.1016/0043-1648(77)90075-8

Cited by 98 publications

(18 citation statements)

References 5 publications

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“…Two types of coating, based on their hardness relative to substrate material, can be applied to protect from fretting damage. Hard coating is normally used for improving wear resistance from fretting wear, while soft coating is used as a solid lubricant for lowering friction at the contact surface and in turn inhibiting cracking under fretting fatigue [2][3][4][5]. Therefore, if a coating system is good for one aspect of fretting damage, e.g.…”

Section: Introductionmentioning

confidence: 99%

Wear analysis of Cu–Al coating on Ti–6Al–4V substrate under fretting condition

et al. 2005

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Fretting behavior of Cu-Al coating on Ti-6Al-4V substrate was investigated with and without fatigue load. Soft and rough Cu-Al coating resulted in abrasive wear and a large amount of debris remained at the contact surface, which caused an increase in tangential force during the fretting test under gross slip condition. Fretting in the partial slip condition also showed the wear of coating. To characterize wear, dissipated energies during fretting were calculated from fretting loops and wear volumes were obtained from worn surface profiles. Energy approach of wear analysis showed a linear relationship between wear volume and accumulated dissipated energy. This relationship was independent of fatigue loading condition and extended from partial slip to gross slip regimes. As an alternate but simple approach for wear analysis, accumulated relative displacement range was correlated with the wear volume. This also resulted in a linear relationship as in the case of accumulated dissipated energy suggesting that the accumulated relative displacement range can be used as an alternative parameter for dissipated energy to characterize the wear. When the maximum wear depth was equal to the thickness of Cu-Al coating, harder Ti-6Al-4V substrate inhibited further increase in wear depth. Only when a considerable energy was supplied through a large value of the applied displacement, wear in the substrate material could occur beyond the thickness of coating.

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Section: Introductionmentioning

confidence: 99%

Wear analysis of Cu–Al coating on Ti–6Al–4V substrate under fretting condition

et al. 2005

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“…Moreover, soft metal coatings like lead, silver, gold, copper, nickel, and indium exhibit low shear strength over a large temperature range and excellent friction properties. Silver and copper have the highest electrical and thermal conductivities of all metals [53]. Twist et al [54] investigated the effects of silver nanoparticles with engine oil (SAE 15W40) at very high temperatures (180-300°C) by providing solid lubrication to contacting surfaces.…”

Section: Silver (Ag) Nanoparticle Additives In Engine Oilmentioning

confidence: 99%

Improving the tribological behavior of internal combustion engines via the addition of nanoparticles to engine oils

Ali¹,

Hou

2015

Nanotechnology Reviews

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The friction between two sliding surfaces is probably one of the oldest problems in mechanics. Frictional losses in any I.C. engine vary between 17% and 19% of the total indicated horse power. The performance of internal combustion engines in terms of frictional power loss, fuel consumption, oil consumption, and harmful exhaust emissions is closely related to the friction force and wear between moving parts of the engine such as piston assembly, valve train, and bearings. To solve this problem, most modern research in the area of Nanotribology (Nano lubricants) aims to improve surface properties, reduce frictional power losses, increase engine efficiency, and reduce consumed fuel and cost of maintenance. Nano lubricants contain different nanoparticles such as Cu, CuO, TiO 2 , Ag, Al 2 O 3 , diamond, and graphene oxide. This paper demonstrates the effect of nanoparticles on the tribological behavior of the engine oil. The main objective of this review is to present recent progress and, consequently, develop an exhaustive understanding about the tribological behavior of engine oils mixed with nanoparticles.

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“…T=r/p (1) Both rand p depend on both the shear strength of the interface and the mechanical properties of the contacting materials. T=r/p (1) Both rand p depend on both the shear strength of the interface and the mechanical properties of the contacting materials.…”

Section: Basic Concepts Of Friction and Wearmentioning

confidence: 99%

“…The tribological behaviour of soft coatings has been thoroughly reviewed by Sherbiney and Halling [1] and is therefore discussed relatively briefly. Very thin, soft coatings are used to provide effective lifetime lubrication of rolling bearings in Earth satellites, while hard ceramic coatings are used for general wear resistance and, in particular, to increase the performance of cutting tools.…”

Section: Introductionmentioning

confidence: 99%

The Mechanics of the Tribology of Thin Film Systems

ARNELL¹

1990

Metallurgical Coatings and Thin Films 1990

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This paper aims to explain both the advantages and the current limitations of thin film systems in tribological situations. It begins with short reviews of the relevant basic concepts of friction and wear, of those elements of contact mechanics which are a necessary introduction to an understanding of tribological behaviour, and of the stresses occurring at uncoated surfaces, initially under normal load only and then under combined normal and tangential loads. It then describes the mechanics underlying the two technologically important systems of hard surfaces covered by soft coatings and relatively soft surfaces covered by hard coatings. The mechanics of the scratch test are then discussed and explanations are offered for the various failure modes observed during such a test. Finally, outlines are given of current and future programmes of work designed to elucidate the factors limiting coating performance.

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Friction and wear of ion-plated soft metallic films

Cited by 98 publications

References 5 publications

Wear analysis of Cu–Al coating on Ti–6Al–4V substrate under fretting condition

Wear analysis of Cu–Al coating on Ti–6Al–4V substrate under fretting condition

Improving the tribological behavior of internal combustion engines via the addition of nanoparticles to engine oils

The Mechanics of the Tribology of Thin Film Systems

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