Interaction of anti-wear additives with friction surfaces

Sanin, P.I.; Vipper, A. B.; Shepeleva, E. S.; Lashkhi, V. L.; Lozovoy, Yu. A.; Markov, A.A.

doi:10.1016/0043-1648(74)90179-3

Cited by 9 publications

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“…These include multifunctional synthetic hydrocarbons, vapor phase lubricants, and a variety of solid coatings. − Frequently observed in these developments is the formation of unexpected byproducts by the chosen lubricant during sliding. These byproducts have been referred to as “friction polymers” or “tribo-polymers” in the literature. − Understanding the formation of these byproducts and whether or not their presence is beneficial to device operation and lifetime is of great importance to many industrial applications as well as surface reaction and tribochemical reaction fundamentals.…”

Section: Introductionmentioning

confidence: 99%

Tribochemical Polymerization of Adsorbed n-Pentanol on SiO₂ during Rubbing: When Does It Occur and Is It Responsible for Effective Vapor Phase Lubrication?

et al. 2010

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The origin and role of tribochemical reaction products formed while sliding silicon oxide surfaces in the presence of adsorbed alcohol molecules in equilibrium with the vapor phase were studied. Wear and friction coefficient studies with varying contact loads and n-pentanol vapor environments were used to determine under what operating conditions the tribochemical reaction species was produced. Imaging time-of-flight secondary ion mass spectrometry and microinfrared spectroscopy found that hydrocarbon species with a molecular weight higher than the starting vapor molecules are produced when there is wear of the SiO(2) surface. When the n-pentanol vapor lubrication is effective and the silicon oxide surface does not wear, then the tribochemical polymerization products are negligible. These results imply that the tribochemical polymerization is associated with the substrate wear process occurring due to insufficient adsorbate supply or high mechanical load. The tribochemical reactions do not seem to be the primary lubrication mechanism for vapor phase lubrication of SiO(2) surfaces with alcohol, although they may lubricate the substrate momentarily upon failure of the alcohol vapor delivery to the sliding contact.

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Section: Introductionmentioning

confidence: 99%

Tribochemical Polymerization of Adsorbed n-Pentanol on SiO₂ during Rubbing: When Does It Occur and Is It Responsible for Effective Vapor Phase Lubrication?

et al. 2010

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The effect of aromatic hydrocarbons in lubricant base oils on the efficiency of adsorptive additives

Tsinghua

Yan-sheng

2002

Lubrication Science

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This paper describes a study of the effect of aromatics in lubricant base oils on the efficiency of adsorptive additives in terms of lubrication and rust-inhibition performance. The additives investigated were sulphurised isobutylene, tricresyl phosphate (TCP), sorbitol monooleate (Span-80), and alkylene succinic acid. Four-ball friction and wear tests, a modified ASTM D 665 rust test, an electrochemical test, and Xray photoelectron spectroscopy f l P S ) were used to reveal the relationship between the aromatics and the additives. The results show that the aromatic hydrocarbons in the base oils reduce the surface activity of the additives; competitive adsorption between the polar compounds and the additives is not a key factor governing the behaviour of the additives under the test conditions.

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Comments on “Interaction of anti-wear additives with friction surfaces”

Silver¹

1975

Wear

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Interaction of anti-wear additives with friction surfaces

Cited by 9 publications

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Tribochemical Polymerization of Adsorbed n-Pentanol on SiO₂ during Rubbing: When Does It Occur and Is It Responsible for Effective Vapor Phase Lubrication?

Tribochemical Polymerization of Adsorbed n-Pentanol on SiO₂ during Rubbing: When Does It Occur and Is It Responsible for Effective Vapor Phase Lubrication?

The effect of aromatic hydrocarbons in lubricant base oils on the efficiency of adsorptive additives

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Interaction of anti-wear additives with friction surfaces

Cited by 9 publications

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Tribochemical Polymerization of Adsorbed n-Pentanol on SiO2 during Rubbing: When Does It Occur and Is It Responsible for Effective Vapor Phase Lubrication?

Tribochemical Polymerization of Adsorbed n-Pentanol on SiO2 during Rubbing: When Does It Occur and Is It Responsible for Effective Vapor Phase Lubrication?

The effect of aromatic hydrocarbons in lubricant base oils on the efficiency of adsorptive additives

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Tribochemical Polymerization of Adsorbed n-Pentanol on SiO₂ during Rubbing: When Does It Occur and Is It Responsible for Effective Vapor Phase Lubrication?

Tribochemical Polymerization of Adsorbed n-Pentanol on SiO₂ during Rubbing: When Does It Occur and Is It Responsible for Effective Vapor Phase Lubrication?