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Protective Tribofilms on Combustion Engine Valves
, 2018 Inside the complex machinery of modern heavy-duty engines, the sealing surfaces of the valve and valve seat insert have to endure. Right next to the combustion, temperatures are high and high pressure deforms the components, causing a small relative motion in the interface.
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Mechanistic Considerations on the Boundary Lubrication of Tribofilms
Mechanistic Considerations on the Boundary Lubrication of Tribofilmsidentifier:oai:t2r2.star.titech.ac.jp ...
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Chemistry of ZDDP Tribofilm by ToF-SIMS
Tribology Letters, 2004Time-of-flight secondary ion mass spectrometry (ToF-SIMS) (static and dynamic modes) has been applied to chemical characterization of zinc dithiophosphate additives tribofilm. Main result concerns insights in the spatial distribution of phosphate and sulphide species in the whole tribofilm thickness, at a sub-micrometer scale.
Clotilde Minfray
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Formation and Characterization of Tribofilms
Journal of Tribology, 2008Fundamentals of tribofilm formation and their properties were studied. In order to understand the effects of lubricants on tribofilms, four base oils were investigated. Lubricants include castor oil, polyethylene glycol, mineral oil, and margarine.
Prasenjit Kar +2 more
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Formation and Nature of Carbon-Containing Tribofilms
ACS Applied Materials & Interfaces, 2019Minimizing friction and wear at a rubbing interface continues to be a challenge and has resulted in the recent surge toward the use of coatings such as diamond-like carbon (DLC) on machine components. The problem with the coating approach is the limitation of coating wear life. Here, we report a lubrication approach in which lubricious, wear-protective
Hongxing Wu +5 more
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Role of tribofilms in wear protection
Tribology International, 2016Abstract Engine valve train wear protection has been observed despite the absence of classical tribofilm formation. This was found with a lubricant containing zinc dialkyldithiophosphate (ZDDP), despite conventional understanding that ZDDP reduces wear by forming a thick, protective, inorganic phosphate tribofilm. We suggest that an antiwear additive
Andrew R. Konicek +3 more
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(iv) Tribofilm on hip implants
Orthopaedics and Trauma, 2013Abstract Performance and longevity of artificial joints are highly correlated with the surface properties of the prosthesis materials. In view of the importance of this research area, this article consolidates the research work with some fundamental aspects to build up a comprehensive picture of the current state of knowledge.
Yu Yan +3 more
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Mass balance of the tribofilm in lubricated systems
Tribology International, 2021Abstract The efficiency of the lubrication systems varies during the time of use of each batch of lubricant, increasing wear and friction in the lubricated system. In this work, transient mass balances of the lubricant precursors that form the protective film in lubricated systems, the substances that constitute the deposited film, and the waste ...
Saúl Domínguez-García +3 more
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Carbon-based tribofilms from lubricating oils
Nature, 2016Moving mechanical interfaces are commonly lubricated and separated by a combination of fluid films and solid 'tribofilms', which together ensure easy slippage and long wear life. The efficacy of the fluid film is governed by the viscosity of the base oil in the lubricant; the efficacy of the solid tribofilm, which is produced as a result of sliding ...
Ali, Erdemir +6 more
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