Results 61 to 70 of about 896 (199)

Tribochemical degradation of vacuum‐stable lubricants: A comparative study between multialkylated cyclopentane and perfluoropolyether in a vacuum ball‐on‐disc and full‐bearing tests

open access: yesLubrication Science, Volume 32, Issue 4, Page 183-191, June 2020., 2020
Abstract In this study, the decomposition of a multialkylated cyclopentane (MAC) and a perfluoro‐poly‐ether (PFPE) lubricant was investigated in a ball‐on‐disc sliding test under vacuum and in a rolling contact fatigue (RCF) test on full bearings. In situ mass spectrometry was conducted to study the tribochemical formation of hydrogen in a steel‐on ...
Dominik Kürten   +2 more
wiley   +1 more source

POSSIBILITY OF APPLICATION FOR ETHERS OF ACONITE ACID AS AW/EP ADDITIVE [PDF]

open access: yesProceedings on Engineering Sciences, 2019
The possibility of using substances containing only carbon, hydrogen and oxygen as antiwear additives for lubricating oils has been investigated. Studies have been conducted on the example of ethers of aconite acid and hexadecyl alcohol.
I. MUKHORTOV   +3 more
doaj   +1 more source

短链脂肪醇开环改性环氧脂肪酸甲酯 制备润滑油基础油Lubricating oil base oil prepared by ring-opening modification of epoxy fatty acid methyl ester with short chain fatty alcohol

open access: yesZhongguo youzhi, 2022
以环氧脂肪酸甲酯为原料,在磷酸催化下与短链脂肪醇开环反应制备一系列的双酯衍生物,作为矿物基基础油的替代品。研究了醇碳链长度对双酯衍生物黏度、酸值、低温流动性、热氧化稳定性等理化性能和极压性能、减摩性能、抗磨性能等摩擦学性能的影响,并探究了双酯衍生物作为基础油对传统润滑添加剂二烷基二硫代磷酸锌(ZDDP)的感受性。结果表明:采用短链脂肪醇对环氧脂肪酸甲酯进行开环改性,可以改善其低温流动性、极压性能和减摩、抗磨性能,而不能改善其热氧化稳定性;制备的双酯衍生物对传统润滑添加剂ZDDP具有良好的感受性。With
卢鹏1,许世海1,王昊康1,向硕1,毕涛2,徐军雄2 LU Peng1,XU Shihai1,WANG Haokang1,XIANG Shuo1,BI Tao2,XU Junxiong2
doaj   +1 more source

Influence of Dispersant and ZDDP on Soot Wear [PDF]

open access: yesTribology Letters, 2018
Diesel engines and gasoline direct injection (GDI) engines both produce soot due to incomplete combustion of the fuel and some enters the lubricant where it accumulates between drain intervals, promoting wear of rubbing engine components. Currently the most favoured mechanism for this wear is that the anti-wear additives present in engine oils ...
A. Kontou   +3 more
openaire   +2 more sources

Relationship between interfacial adsorption of additive molecules and reduction of friction coefficient in the organic friction modifiers-ZDDP combinations [PDF]

open access: yes, 2022
Organic friction modifiers (OFMs) are often used with zinc-dialkyl-dithio-phosphate (ZDDP) in engine oil formulations to reduce boundary friction while maintaining the anti-wear property of ZDDP.
Hirayama, Tomoko   +8 more
core   +1 more source

A Study on the Tribofilm Growth and Tribological Properties of Tribofilms Formed from Zinc Dialkyl Dithiophosphate (ZDDP) and Molybdenum Dialkyl Dithiocarbamate (MoDTC)

open access: yesTribology Online, 2018
Tribofilms are critical for the management of wear and the control of friction. This study focused on the tribological properties of tribofilms to clarify their antiwear and low-friction mechanisms.
Renguo Lu   +4 more
doaj   +1 more source

The effect of organic friction modifiers on ZDDP tribofilm [PDF]

open access: yes, 2018
In recent years a major concern in lubricant formulation has become the design of lubricants that can deliver very low friction and thus reduce energy consumption.
Dawczyk, Joanna Urzula
core   +1 more source

Effect of iron addition on the structure and tribological performance of CrAlN coatings Einfluss von Eisen‐Zugabe auf die Struktur und das tribologische Verhalten von CrAlN‐Beschichtungen

open access: yesMaterialwissenschaft und Werkstofftechnik, Volume 57, Issue 3, Page 184-196, March 2026.
Hard coatings mitigate friction and wear of engineering components, while tribochemical interactions between lubricant and coating strongly influence performance. Masking ferrous surfaces with a coating reduces the effectiveness of additives optimized for steel.
K. Bobzin   +4 more
wiley   +1 more source

Comparing Tribochemical Film Formation and Durability at Steel and CrN Coating Interface in Boundary Lubrication

open access: yesTribology Online, 2010
One of the main challenges that engine oil manufacturers are now facing is to reduce friction losses while at the same time increasing the durability of engine components.
Ardian Morina   +2 more
doaj   +1 more source

Tribological Properties of Polymer Friction Improvers Combined with MoDTC/ZDDP at Different Temperatures

open access: yesLubricants, 2023
To expand the applications of polymer friction modifiers in low viscosity oils suitable for hybrid power systems, the tribological properties of five kinds of oil samples at different temperatures were studied, which were compounded with polymer friction
Ye Hong, Yimin Mo, Juncheng Lv, Jun Wang
doaj   +1 more source

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