Results 41 to 50 of about 155 (134)

Tribological Performance of a Composite Cold Spray for Coated Bores

Lubricants, 2023
The tribological performance of a thermal sprayed, mirror-like surface with localized protuberances was investigated through tribotests and computational simulation.
Eduardo Tomanik, Laurent Aubanel, Michael Bussas, Francesco Delloro, Thomas Lampke   +4 more
doaj   +1 more source

In Situ Raman-SLIM Monitoring for the Formation Processes of MoDTC and ZDDP Tribofilms at Steel/Steel Contacts under Boundary Lubrication

Tribology Online, 2020
In this study, the formation processes of molybdenum dithiocarbamate (MoDTC) and zinc diallyldithiophosphate (ZDDP) tribofilms were investigated using an in situ Raman-space layer imaging method (SLIM) tribometer under boundary lubrication.
Hikaru Okubo, Chiharu Tadokoro, Shinya Sasaki   +2 more
doaj   +1 more source

Synergistic Effect of Acrylate of Dialkyl Dithiophosphoric Acid Combined with Molybdenum Dialkyl Dithiocarbamate as Additives in Gear Oil

Lubricants
With the aim of improving the tribological properties of low-viscosity gear oil for automobiles, an acrylate of dialkyl dithiophosphoric acid (ADDP) with strong polar groups was synthesized.
Minghao Ding, Yimin Mo, Hong Zhang, Qingchun Liu   +3 more
doaj   +1 more source

MoDTC-induced wear acceleration mechanism of a hydrogenated amorphous carbon diamond-like carbon film

Nihon Kikai Gakkai ronbunshu, 2018
The wear acceleration mechanism of a DLC film lubricated with MoDTC solution was investigated by using in-situ and ex-situ analytical techniques: Raman spectroscopy, SEM-EDS, ToF-SIMS, and nano-indenter. From the results, the structural change of the DLC
Hikaru OKUBO, Hiroaki MAEDA, Shouhei KAWADA, Chiharu TADOKORO, Shinya SASAKI   +4 more
doaj   +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)

Tribology 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, Sora Shiode, Hiroshi Tani, Norio Tagawa, Shinji Koganezawa   +4 more
doaj   +1 more source

Interactions of Ethanol with Friction Modifiers in Model Engine Lubricants

Lubricants, 2019
When employed as an engine fuel, ethanol can accumulate in the lubricant during use. Previous work has shown that ethanol contamination affects friction and elastohydrodynamic lubrication (EHL) film formation, and also the growth and stability of anti ...
Henara L. Costa, Hugh Spikes
doaj   +1 more source

The role of MoDTC tribochemistry in engine tribology performance. A Raman microscopy investigation [PDF]

Tribology International, 2020
Abstract In order to tackle the new challenges towards the reduction of carbon emissions in transport industry, the present work aims to understand the effect of the friction modifier (FM) molybdenum dithiocarbamate (MoDTC) on the performance of an automobile engine.
Espejo, C, Wang, C, Thiébaut, B, Charrin, C, Neville, A, Morina, A   +5 more
openaire   +2 more sources

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

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, Tabassumul Haque, Anne Neville   +2 more
doaj   +1 more source

The Effect of Lubricity of Calcium Sulfonate on ZnDTP and MoDTC

Tribology Letters
AbstractReduction of friction and wear by lubrication is necessary to improve the efficiency and prolong the lifespan of industrial machinery. However, several aspects regarding the lubrication effects in additive-combined oil are still unresolved.
Yumi Hayashi, Kaisei Sato, Shinya Sasaki
openaire   +1 more source

Friction and Wear Characteristics of Molybdenum Dithiocarbamate with Alloy Steels

Tribology Online, 2006
The effects of composition of alloy steel on the friction and wear characteristics of molybdenum dithiocarbamate MoDTC were studied in reciprocated sliding contact using a ball-on-plate type tester. The oil used was squalane of a pure hydrocarbon.
Hiroyoshi Tanaka, Masaaki Hashimoto, Seigo Gondo, Yuji Yamamoto   +3 more
doaj   +1 more source