Results 41 to 50 of about 314 (176)
Film Thickness and Friction of ZDDP Tribofilms [PDF]
Tribology Letters, 2019 Tribofilm formation by several zinc dialkyl- and diaryldithiophosphate (ZDDP) solutions in thin film rolling-sliding conditions has been investigated. A primary, a secondary alkyl and a mixed alkyl ZDDP show similar rates of film formation and generate films typically 150 nm thick.
Joanna Dawczyk +3 more
openaire +2 more sources
Lubrication 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]
Proceedings 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
Use of FIB to Study ZDDP Tribofilms [PDF]
Tribology Letters, 2018 Focussed ion beam milling (FIB) followed by TEM has been used to study ZDDP tribofilms on rubbed steel surfaces. It has been found that the impact of high energy platinum and gallium ions during FIB causes significant morphological and structural changes to the uppermost 30–50 nm of a ZDDP tribofilm.
Joanna Dawczyk +4 more
openaire +2 more sources
Tribochemical investigation of ZDDP tribofilm
, 2021 The current trend for using lower-viscosity lubricants with the aim of improving fuel efficiency of mechanical systems means that machine components are required to operate for longer periods in thin oil film, mixed and boundary lubrication conditions, where the risk of surface damage is increased. For this reason, the role of tribofilms generated from
openaire +2 more sources
Influence of Dispersant and ZDDP on Soot Wear [PDF]
Tribology 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
Positive Antiwear Interaction Between ZDDP and CNTs, GNPs and FLGs Under Boundary Lubrication
LubricantsIndustrial gear contacts operate under mixed-to-boundary lubrication where reliable antiwear protection is essential. This study assesses whether carbon nanomaterials can enhance the performance of zinc dialkyldithiophosphate (ZDDP) under severe ...
Juan Pablo Abdelnabe +4 more
doaj +1 more source
Tribology 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
Zhongguo 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
Materialwissenschaft 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