Results 11 to 20 of about 752 (165)
Understanding Tribofilm Formation Mechanisms in Ionic Liquid Lubrication [PDF]
Scientific Reports, 2017 Ionic liquids (ILs) have recently been developed as a novel class of lubricant anti-wear (AW) additives, but the formation mechanism of their wear protective tribofilms is not yet well understood.
Yan Zhou +3 more
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Coupling effect of boundary tribofilm and hydrodynamic film
Cell Reports Physical Science, 2022 Summary: Reducing the friction and wear of dynamic interfaces has been a constant endeavor in the field of sustainability. Lubricants with two-dimensional atomic materials are operative frameworks proposed as promising candidates: they can together ...
Bao Jin +5 more
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Boundary Friction of ZDDP Tribofilms [PDF]
Tribology Letters, 2020 AbstractThe frictional properties of ZDDP tribofilms at low entrainment speeds in boundary lubrication conditions have been studied in both rolling/sliding and pure sliding contacts. It has been found that the boundary friction coefficients of these tribofilms depend on the alkyl structure of the ZDDPs. For primary ZDDPs, those with linear alkyl chains
Jie Zhang +3 more
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Self-healing WS2 tribofilms: An in-situ appraisal of mechanisms [PDF]
Scripta Materialia, 2021 Self-healing tribocoatings are being developed for aerospace applications to improve the lifetime and reduce the surface maintenance of components in motion. Here the tribo-induced self-healing behaviour of a WS2/a-C tribocoating has been evaluated for the first time by in-situ scanning electron microscopy (SEM) to evaluate the mechanisms of damage and
Huatang Cao +6 more
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Use of FIB to Study ZDDP Tribofilms [PDF]
Tribology Letters, 2018 Focussed ion beam milling (FIB) followed by TEM has been used to study ZDDP tribofilms on rubbed steel surfaces. It has been found that the impact of high energy platinum and gallium ions during FIB causes significant morphological and structural changes to the uppermost 30–50 nm of a ZDDP tribofilm.
Joanna Dawczyk +4 more
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Correction to: Boundary Friction of ZDDP Tribofilms [PDF]
Tribology Letters, 2021 The original version of this article unfortunately contained a formatting mistake in tables and figures placement.
Jie Zhang +3 more
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Film Thickness and Friction of ZDDP Tribofilms [PDF]
Tribology Letters, 2019 Tribofilm formation by several zinc dialkyl- and diaryldithiophosphate (ZDDP) solutions in thin film rolling-sliding conditions has been investigated. A primary, a secondary alkyl and a mixed alkyl ZDDP show similar rates of film formation and generate films typically 150 nm thick.
Joanna Dawczyk +3 more
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Tribofilms Forming in Oil-Lubricated Contacts [PDF]
Lubricants, 2016 The subject of the present paper is the characterization of third bodies of run-in systems. By means of continuous friction and wear measurement, lubricated steel-steel and steel-aluminum contacts were evaluated. Microstructure, chemical composition and response of the materials to shear were analyzed by XPS/AES and focused ion beam technique.
Matthias Scherge +2 more
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On the Crystallinity and Durability of ZDDP Tribofilm [PDF]
Tribology Letters, 2019 Abstract The current trend for using lower-viscosity lubricants with the aim of improving fuel economy of mechanical systems means that machine components are required to operate for longer periods in thin oil film, mixed lubrication conditions, where the risk of surface damage is increased. Consequently, the performance and durability of
Ueda, M, Kadiric, A, Spikes, H
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Effect of Sliding on the Relation of Tribofilm Thickness and Wear
Lubricants, 2023 The formation of tribofilms depends on temperature, shear stress, availability of the related chemical components, and characteristics of the near surface region, e.g., roughness and surface chemistry.
Martin Jech +4 more
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