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Historical developments and new trends in tribological and solid lubricant coatings.
C. Donnet,Ali Erdemir +1 more
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In this article, the authors present a recent understanding of the lubrication mechanisms of both traditional and new solid lubricants, with particular emphasis on solid lubricant methods and practices, as well as their applications.Abstract:
In recent years, several new solid lubricant and modern lubrication concepts have been developed to achieve better lubricity and longer wear life in demanding tribological applications. Most of the traditional solid lubricants were prepared in the form of metal, ceramic and polymer-matrix composites. They have been used successfully in various engineering applications. Recent progress in thin-film deposition technologies has led to the synthesis of new generations of adaptative, self-lubricating coatings with composite or multilayered architectures, by using duplex/multiplex surface treatments. These modern self-lubricating coatings progressively make their way into the commercial marketplace and meet the ever-increasing performance demands of more severe applications. The present paper reviews our recent understanding of the lubrication mechanisms of both traditional and new solid lubricants, with particular emphasis on solid lubricant methods and practices.read more
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Frictional Characteristics of Atomically Thin Sheets
Changgu Lee,Qunyang Li,William B. Kalb,Xin-Zhou Liu,Helmuth Berger,Robert W. Carpick,James Hone +6 more
TL;DR: In this article, the authors compared the nanoscale frictional characteristics of atomically thin sheets of graphene, molybdenum disulfide (MoS2), niobium diselenide, and hexagonal boron nitride exfoliated onto a weakly adherent substrate (silicon oxide) to those of their bulk counterparts.
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Global energy consumption due to friction in passenger cars
TL;DR: In this article, the authors presented calculations on the global fuel energy consumption used to overcome friction in passenger cars in terms of friction in the engine, transmission, tires, and brakes.
Journal ArticleDOI
Recent progress in the development and properties of novel metal matrix nanocomposites reinforced with carbon nanotubes and graphene nanosheets
Sie Chin Tjong,Sie Chin Tjong +1 more
TL;DR: In this article, the authors focus on the recent development in the synthesis, property characterization and application of aluminum, magnesium, and transition metal-based composites reinforced with carbon nanotubes and graphene nanosheets.
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Mechanical and tribological properties of self-lubricating metal matrix nanocomposites reinforced by carbon nanotubes (CNTs) and graphene – A review
TL;DR: In this paper, the authors focus on the recent development in mechanical and tribological behavior of self-lubricating metallic nanocomposites reinforced by carbonous nanomaterials such as CNT and graphene.
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Global energy consumption due to friction in trucks and buses
TL;DR: In this paper, the authors report the global fuel energy consumption in heavy-duty road vehicles due to friction in engines, transmissions, tires, auxiliary equipment, and brakes, and estimate that the parasitic frictional losses, with braking friction excluded, are 26% of the fuel consumption.
References
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Diamond-like amorphous carbon
TL;DR: In this paper, the authors describe the deposition methods, deposition mechanisms, characterisation methods, electronic structure, gap states, defects, doping, luminescence, field emission, mechanical properties and some applications of diamond-like carbon.
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Plasma electrolysis for surface engineering
TL;DR: The physical and chemical fundamentals of plasma electrolysis are discussed in this article, and the equipment and deposition procedures for coating production are described, and the effects of electrolyte composition and temperature on ignition voltage, discharge intensity and deposited layer thickness and composition are outlined.
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On the significance of the H/E ratio in wear control: a nanocomposite coating approach to optimised tribological behaviour
Adrian Leyland,Allan Matthews +1 more
TL;DR: In this article, the authors discuss the concept of nanocomposite coatings with high hardness and low elastic modulus, which can exhibit improved toughness, and are therefore better suited for optimising the wear resistance of real industrial substrate materials (i.e., steels and light alloys, with similarly low moduli).
Journal ArticleDOI
Polyhedral and cylindrical structures of tungsten disulphide
TL;DR: In this article, the formation of equivalent stable structures in the layered semiconductor tungsten disulphide was reported, and the closed nature of the structures was verified by electron diffraction and lattice imaging.
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Single layer and multilayer wear resistant coatings of (Ti,Al)N: a review
S PalDey,Seetharama C. Deevi +1 more
TL;DR: In this paper, the status of (Ti,Al)N based coatings obtained by various physical vapor deposition (PVD) techniques and compare their properties is discussed and compared with coatings such as TiN, Ti(C,N) and (TiZr)N.