Results 181 to 190 of about 2,082 (212)

The mutual interaction between tribochemistry and lubrication: Interfacial mechanics of tribofilm [PDF]

Tribology International, 2019
A new mechanism for the action of antiwear tribofilms is proposed. The antiwear action of ZDDP additive is believed to be mainly due to the formation of tribofilms that reduce wear by chemical action. In this study, a mixed lubrication model is developed
Abdullah Azam, Abdel Dorgham, Pourya Parsaeian   +2 more
exaly   +2 more sources

Some of the next articles are maybe not open access.

Related searches:

(iv) Tribofilm on hip implants

Orthopaedics and Trauma, 2013
Abstract 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, Linghe Wang, Anne Neville, Lijie Qiao   +3 more
openaire   +1 more source

Role of tribofilms in wear protection

Tribology International, 2016
Abstract 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, Peter W. Jacobs, Martin N. Webster, Alan M. Schilowitz   +3 more
openaire   +1 more source

Mass balance of the tribofilm in lubricated systems

Tribology International, 2021
Abstract 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, Claudio E. Aguilar-Ramírez, Luis Béjar-Gómez, Rafael Maya-Yescas   +3 more
openaire   +1 more source

Carbon-based tribofilms from lubricating oils

Nature, 2016
Moving 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, Giovanni, Ramirez, Osman L, Eryilmaz, Badri, Narayanan, Yifeng, Liao, Ganesh, Kamath, Subramanian K R S, Sankaranarayanan   +6 more
openaire   +2 more sources

Understanding the Role of Directional Texture in Tribofilm Evolution

Journal of Tribology, 2022
Abstract This paper reports a study of the evolution of directional texture and its role in the manipulation of tribofilm layers under boundary lubrication (BL). The use of surface protective tribofilms/lubricant chemistries along with the use of textured surfaces has gained significant attention as an effective BL strategy to provide ...
Salil Bapat, Ajay P. Malshe
openaire   +1 more source

Tribofilm formation in ultrananocrystalline diamond film

Diamond and Related Materials, 2017
Abstract Friction and wear properties of ultrananocrystalline diamond (UNCD) films are found to be superior, and therefore it could be useful for various applications. However, understanding of the tribological properties with respect to boundary phase composition in this material is not yet well understood.
Revati Rani, K.J. Sankaran, Kalpataru Panda, N. Kumar, K. Ganesan, S. Chakravarty, I-Nan Lin   +6 more
openaire   +1 more source

Tribofilms: aspects of formation, stability and removal

Journal of Physics D: Applied Physics, 2007
There has been much attention paid to the lubricant additives zinc dialkyldithiphosphate and molybdenum dialkyldithiocarbamate as the most commonly used antiwear/antioxidant and friction modifiers. The mechanism by which they function has been the subject of much research work. As a result of these efforts the tribofilms formed from the above additives
Ardian Morina, Anne Neville
openaire   +1 more source

XPS investigations of tribofilms formed on CrN coatings

Applied Surface Science, 2017
Abstract Action of lubrication additives in the case of uncoated steel surfaces, including the type and mechanism of tribofilm formation is well known and understood. However, contact type of tribofilms which might form under the tribological contact between CrN coated surfaces, remains more or less unexplored.
Djordje Mandrino, Bojan Podgornik
openaire   +1 more source

Friction response of ZDDP thermal film and tribofilm

Tribology - Materials, Surfaces & Interfaces, 2011
An original dynamic tribotest was used to study the friction response of two kinds of tribological surface: zinc-dialkyl-dithio-phosphate (ZDDP) thermal film and ZDDP tribofilm. This apparatus allows friction to be determined with no need for measuring tangential force.
Njiwa, P, Minfray, C., Belin, M., Rigaud, Emmanuel, Martin, M.   +4 more
openaire   +1 more source