Results 11 to 20 of about 2,042 (207)
ZDDP Tribofilm Formation on Non-Ferrous Surfaces
Tribology Online, 2020 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, boundary and mixed lubrication conditions ...
Mao Ueda, Amir Kadiric, Hugh Spikes
doaj +5 more sources
On the mechanism of ZDDP antiwear film formation [PDF]
Tribology Letters, 2016 Zinc dialkyldithiophosphate additives are used to control wear and inhibit oxidation in almost all engine oils as well as many other types of lubricant. They limit wear primarily by forming a thick, protective, phosphate glass-based tribofilm on rubbing ...
Spikes, HA, Zhang, J
core +5 more sources
Atmospheric pressure matrix-assisted laser desorption/ionization mass spectrometry of engine oil additive components. [PDF]
Rapid Commun Mass Spectrom, 2022 Rationale The efficiency of lubricants strongly depends on the content of functional additives. In order to assess the chemical and structural changes taking place in the lubricating oil and its additives during operation, it is essential to develop a method for simple and prompt analysis.
Ramopoulou L +4 more
europepmc +2 more sources
Detailed chemical analysis of a fully formulated oil using dielectric barrier discharge ionisation-mass spectrometry. [PDF]
Rapid Commun Mass Spectrom, 2022 Rationale Fully formulated oils (FFOs) are integral to automotive lubrication; however, detailed compositional analysis is challenging due to high levels of chemical complexity. In particular, existing mass spectrometric approaches often target particular FFO components, leading to poor analytical coverage of the overall formulation, with increased ...
Basham V +4 more
europepmc +2 more sources
Chemical analysis of additives included in fully formulated oils using high-performance liquid chromatography-tandem mass spectrometry. [PDF]
Rapid Commun Mass SpectromRationale Fully formulated oils (FFOs) are chemically complex petrochemical products composed of base oil and additive mixtures that are employed in automotive engines to provide lubrication. In particular, the additive portion of FFOs is often precisely controlled to tailor the resultant formulation to a specific role.
Basham V +4 more
europepmc +2 more sources
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
openaire +3 more sources
Ethoxylated Amine Friction Modifiers and ZDDP [PDF]
Tribology Letters, 2019 AbstractThe influence of a series of Ethomeens (ethoxylated alkylamine organic friction modifiers) on the durability and friction of tribofilms formed by a commercial blend of primary and secondary ZDDP in sliding/rolling contact has been studied. When pre-formed ZDDP tribofilms are rubbed in Ethomeen solution, boundary friction is reduced and some of ...
Joanna Dawczyk, Joe Russo, Hugh Spikes
openaire +3 more sources
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
openaire +3 more sources
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
openaire +1 more source
Additive Manufacturing of Polymer‐Based Lubrication
Macromolecular Materials and Engineering, Volume 308, Issue 11, November 2023., 2023 In polymer‐based lubrication investigations, experimental techniques are widely utilized to investigate and contrast material differences. The design of diverse multiscale, lubricated structures provides many options, according to 3D printing technology's rapid development.
Khan Rajib Hossain +7 more
wiley +1 more source