Results 171 to 180 of about 2,081 (223)
Recent Advances in Polymer-Coated Metal and Metal Oxide Nanoparticles: From Design to Promising Applications. [PDF]
Nanomaterials (Basel)Atik R +4 more
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The Tribological Properties of Novel Sulfoximine Derivatives as Lubricant Additives. [PDF]
Materials (Basel)Zhang J +6 more
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Preventive maintenance in urban public transport: the role of engine oil analysis. [PDF]
Sci RepGołębiowski W, Wolak A, Zając G.
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ZDDP and MoDTC interactions in boundary lubrication—The effect of temperature and ZDDP/MoDTC ratio
Tribology International, 2006Abstract Tribofilms formed under boundary lubrication from ZDDP and MoDTC additives alone or in different ratios in the lubricant have been studied. The tribological performance is linked to the tribofilm properties and consequently to the lubricating conditions. Tribofilms are formed using a reciprocating pin-on-plate tribometer.
Anne Neville, Martin Priest
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The History and Mechanisms of ZDDP
Tribology Letters, 2004This paper reviews research into the mechanisms of action of the lubricating oil additive, zinc dialkyldithophosphate (ZDDP). The development of the use and research into ZDDP is first charted historically, starting with the additive's first introduction in engine oils in the late 1930s. Then our current state of knowledge of each of the main facets of
Hugh A Spikes
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Tribology Transactions, 2008
Environmental regulations have called for a reduction of phosphorus content in engine oils in recent years. The anti-wear additive zinc dialkyl dithiophosphate (ZDDP), which is also an antioxidant, is one of the most important components of engine oil additives. ZDDP is a major source of phosphorus.
A. Somayaji, P. B. Aswath
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Environmental regulations have called for a reduction of phosphorus content in engine oils in recent years. The anti-wear additive zinc dialkyl dithiophosphate (ZDDP), which is also an antioxidant, is one of the most important components of engine oil additives. ZDDP is a major source of phosphorus.
A. Somayaji, P. B. Aswath
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Tribology Transactions, 2003
Many phosphorus-based antiwear films, including those formed by zinc dialkyl dithiphosphates (ZDDP), cause a significant increase in friction in thin film, high-pressure, lubricated contacts. This can have a deleterious effect on engine oil fuel efficiency.
L. J. Taylor, H. A. Spikes
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Many phosphorus-based antiwear films, including those formed by zinc dialkyl dithiphosphates (ZDDP), cause a significant increase in friction in thin film, high-pressure, lubricated contacts. This can have a deleterious effect on engine oil fuel efficiency.
L. J. Taylor, H. A. Spikes
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Synthesis of Fluorinated ZDDP Compounds
Part A: Tribomaterials; Lubricants and Additives; Elastohydrodynamic Lubrication; Hydrodynamic Lubrication and Fluid Film Bearings; Rolling Element Bearings; Engine Tribology; Machine Components Tribology; Contact Mechanics, 2006Volatile degradation products of zinc dialkyl dithio phosphate (ZDDP) composed of phosphorus and sulfur compounds reduce the efficiency of catalytic converters resulting in harmful emissions. A unique way of reducing ZDDP level while maintaining good antiwear performance has been achieved by reacting a novel additive FeF3 with ZDDP.
K. Parekh, P. B. Aswath
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The origin of anti-wear chemistry of ZDDP
Faraday Discussions, 2012Molecular Dynamics has been used to simulate the anti-wear chemistry of zinc dialkyl dithiophosphate (ZDDP). The model simulates the digestion of abrasive particles into the zinc polyphosphate glass. The main result is that the driving force for the tribochemical reaction is not temperature but entropy due to mechanical mixing at the atomic scale.
Jean Michel, Martin +4 more
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Antiwear Chemistry in Presence of ZDDP
World Tribology Congress III, Volume 1, 2005Antiwear chemistry is related to the role of tribochemical reactions in controlling abrasive wear, adhesive wear as well as physical and mechanical properties of tribofilms. In the case of additives in boundary lubrication, three different chemical reactions have been found to be directly connected to mechanical response.
J. M. Martin, C. Minfray
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