Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 4 of 4 for “"Tribofilm"”.
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Development of a multi-regime tribometer and investigation of zinc dialkyldithiophosphate tribofilm development in the presence of overbased calcium sulfonate
… was studied in detail with respect to tribofilm production. As typical oil formulations contain an assortment of additives, the development of these films in the presence of other additives was studied. Of these, overbased detergents have recently been under scrutiny with mixed findings …
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The feasibility of using electrostatic charge condition monitoring for lubricant additive screening
… additive were related to the stripping of the tribofilm. The source of this charge peak was an increase in negative charge, which correlated with a dominance of phosphate and sulphate (anions) compared to zinc (cations), as the film was worn away. When friction modifier (FM) and dispersant …
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Investigating Tempo-Oxidized Cellulose Nanofiber Lubricating Greases Using Microscopy, Rheology, and Tribology
… oleic acid and nanoparticle surface activity/tribofilm generation. It also revealed interesting high wear behavior at high relative concentrations of oleic acid. For example, wear scar diameter roughly increases 6x at 0.75 OA:TOCN ratio compared to both 0.25 and 0.50 ratios.
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Tribology of engineering and coated materials in the presence of environmentally friendly refrigerant
… conditions. However, beneficial anti-wear tribofilms were shown to evolve throughout this process as revealed via Scanning Electron Microscopic (SEM) analysis. Energy Dispersive Spectroscopy (EDS) in conjunction with X-ray Photoelectron Spectroscopic (XPS) analysis identified the existence …