The Effect of Temperature on Lubrication Property with MoDTC-Containning Lubricant

The effect of temperature on the lubricity of molybdenum dithiocarbamate (MoDTC) was investigated by a ball on disk tribometer with lubricant oil containing MoDTC and calcium sulfonate (CaSU) at temperatures of 25˚C, 40˚C, 60˚C and 80˚C. The behavior of friction coefficient was closely dependent on...

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Autores principales:	Masanori Komaba, Shinya Kondo, Atsushi Suzuki, Kazue Kurihara, Shigeyuki Mori
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2018
Materias:	molybudenum dithiocarbamate molybdenum disulfide tribo chemistry friction coefficient tribofilm x-ray photoelectron spectroscopy high resolution transmission electron microscopy temperature dependence layer structure Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/ecd8671a9f584757ad5c2da0cf048ac1
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spelling	oai:doaj.org-article:ecd8671a9f584757ad5c2da0cf048ac12021-11-05T09:19:00ZThe Effect of Temperature on Lubrication Property with MoDTC-Containning Lubricant1881-219810.2474/trol.13.275https://doaj.org/article/ecd8671a9f584757ad5c2da0cf048ac12018-12-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/13/5/13_275/_pdf/-char/enhttps://doaj.org/toc/1881-2198The effect of temperature on the lubricity of molybdenum dithiocarbamate (MoDTC) was investigated by a ball on disk tribometer with lubricant oil containing MoDTC and calcium sulfonate (CaSU) at temperatures of 25˚C, 40˚C, 60˚C and 80˚C. The behavior of friction coefficient was closely dependent on the oil temperature. Friction coefficient decreased after a certain induction period and became to be constant at steady state. At higher temperature, the induction period became to be shorter, and the slope of decreasing friction coefficient became to be steeper. Friction coefficient at steady state decreased at higher temperature, and was changed reversibly when the oil temperature was changed. Oscillatory change in friction was observed when the oil temperature was changed periodically. Chemical analysis of the tribofilm with X-ray Photoelectron Spectroscopy (XPS) revealed that higher content of Mo(IV) as a component of molybdenum disulfide (MoS2) was observed in the tribofilm formed at higher temperature. Highly oriented MoS2 layer was observed with High Resolution Transmission Electron Microscopy (HR-TEM) in the tribofilm formed at 80˚C. It was found that the structure of tribofilm is altered reversibly with oil temperature. A steady state model of tribofilm formation was proposed on the basis of observed results.Masanori KomabaShinya KondoAtsushi SuzukiKazue KuriharaShigeyuki MoriJapanese Society of Tribologistsarticlemolybudenum dithiocarbamatemolybdenum disulfidetribo chemistryfriction coefficienttribofilmx-ray photoelectron spectroscopyhigh resolution transmission electron microscopytemperature dependencelayer structurePhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 13, Iss 5, Pp 275-281 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	molybudenum dithiocarbamate molybdenum disulfide tribo chemistry friction coefficient tribofilm x-ray photoelectron spectroscopy high resolution transmission electron microscopy temperature dependence layer structure Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	molybudenum dithiocarbamate molybdenum disulfide tribo chemistry friction coefficient tribofilm x-ray photoelectron spectroscopy high resolution transmission electron microscopy temperature dependence layer structure Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Masanori Komaba Shinya Kondo Atsushi Suzuki Kazue Kurihara Shigeyuki Mori The Effect of Temperature on Lubrication Property with MoDTC-Containning Lubricant
description	The effect of temperature on the lubricity of molybdenum dithiocarbamate (MoDTC) was investigated by a ball on disk tribometer with lubricant oil containing MoDTC and calcium sulfonate (CaSU) at temperatures of 25˚C, 40˚C, 60˚C and 80˚C. The behavior of friction coefficient was closely dependent on the oil temperature. Friction coefficient decreased after a certain induction period and became to be constant at steady state. At higher temperature, the induction period became to be shorter, and the slope of decreasing friction coefficient became to be steeper. Friction coefficient at steady state decreased at higher temperature, and was changed reversibly when the oil temperature was changed. Oscillatory change in friction was observed when the oil temperature was changed periodically. Chemical analysis of the tribofilm with X-ray Photoelectron Spectroscopy (XPS) revealed that higher content of Mo(IV) as a component of molybdenum disulfide (MoS2) was observed in the tribofilm formed at higher temperature. Highly oriented MoS2 layer was observed with High Resolution Transmission Electron Microscopy (HR-TEM) in the tribofilm formed at 80˚C. It was found that the structure of tribofilm is altered reversibly with oil temperature. A steady state model of tribofilm formation was proposed on the basis of observed results.
format	article
author	Masanori Komaba Shinya Kondo Atsushi Suzuki Kazue Kurihara Shigeyuki Mori
author_facet	Masanori Komaba Shinya Kondo Atsushi Suzuki Kazue Kurihara Shigeyuki Mori
author_sort	Masanori Komaba
title	The Effect of Temperature on Lubrication Property with MoDTC-Containning Lubricant
title_short	The Effect of Temperature on Lubrication Property with MoDTC-Containning Lubricant
title_full	The Effect of Temperature on Lubrication Property with MoDTC-Containning Lubricant
title_fullStr	The Effect of Temperature on Lubrication Property with MoDTC-Containning Lubricant
title_full_unstemmed	The Effect of Temperature on Lubrication Property with MoDTC-Containning Lubricant
title_sort	effect of temperature on lubrication property with modtc-containning lubricant
publisher	Japanese Society of Tribologists
publishDate	2018
url	https://doaj.org/article/ecd8671a9f584757ad5c2da0cf048ac1
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The Effect of Temperature on Lubrication Property with MoDTC-Containning Lubricant

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