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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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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.
A Morina, Anne Neville, M Priest
exaly +2 more sources
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
exaly +2 more sources
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.
H A Spikes
exaly +2 more sources
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.
H A Spikes
exaly +2 more sources
Effect of ZDDP on friction in fretting contacts
Wear, 2011 Abstract The effect of ZDDP on fretting wear was investigated in a ball on flat machine. The results confirm previous work that anti-wear agents may reduce friction and wear in fretting contacts. It was further found that temperature, adsorption time, base oil polarity as well as the presence of other surface active additives in the oil were all ...
Mattias Grahn +2 more
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The antiwear mechanism of zddp's. Part I
Tribology International, 1982Abstract Zinc dialkyldithiophosphates (zddp's) have been used in internal combustion engine oils for over 30 years as antiwear and antioxidant additives. In this paper, their mode of action is investigated. It was concluded, using various analytical techniques, that zddp's decompose in oil solution predominantly by a hydrolytic mechanism, ultimately ...
H. Spedding, R.C. Watkins
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Tribology Transactions, 2003
In a companion paper, Part I, it was shown that the friction enhancement produced in mixed lubrication conditions by ZDDP reaction films is not due to surface roughening as has previously been supposed. Instead, optical measurement of elastohydrodynamic film thickness shows that the presence of a ZDDP reaction layer inhibits the entrainment of liquid ...
H A Spikes
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In a companion paper, Part I, it was shown that the friction enhancement produced in mixed lubrication conditions by ZDDP reaction films is not due to surface roughening as has previously been supposed. Instead, optical measurement of elastohydrodynamic film thickness shows that the presence of a ZDDP reaction layer inhibits the entrainment of liquid ...
H A Spikes
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Interactions between ZDDP and an oil-soluble ionic liquid additive [PDF]
Tribology International, 2021 Zinc dialkyldithiophosphates (ZDDP) and a P-based ionic liquid (IL) were added in a polyalphaolefin base oil (PAO). Their tribological performance in steel-steel contacts in the boundary (BL) and “starved” elastohydrodynamic (sEHL) lubrication conditions
Datong Zhang +2 more
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In-situ observations of the effect of the ZDDP tribofilm growth on micropitting [PDF]
Tribology International, 2019 The ongoing trend for using ever lower viscosities of lubricating oils, with the aim of improving the efficiency of mechanical systems, means that machine components are required to operate for longer periods under thin film, mixed lubrication conditions
Mao Ueda, H A Spikes, Amir Kadiric
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