The Investigation of Improvement Effects on Friction Properties of Mononuclear MoDTCs having Azaheterocycles by Episulfidation

The effects of episulfidation on the frictional properties of mononuclear molybdenum dithiocarbamates having azaheterocycles were investigated. It was shown that the friction coefficients of the lubricants with the episulfided mononuclear molybdenum dithiocarbamates, as measured by the SRV friction...

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Autores principales: Chihiro Bandoh, Hashimoto Hashimoto, Masatsugu Kajitan, Eiji Nagatomi, Noriaki Shinoda, Toru Sugiyama, Izumi Takayanagi, Hiroyukii Tazaki
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Publicado: Japanese Society of Tribologists 2010
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spelling oai:doaj.org-article:c2bd79316d724b1d853ffbd6c21035122021-11-05T09:26:56ZThe Investigation of Improvement Effects on Friction Properties of Mononuclear MoDTCs having Azaheterocycles by Episulfidation1881-219810.2474/trol.5.199https://doaj.org/article/c2bd79316d724b1d853ffbd6c21035122010-10-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/5/4/5_4_199/_pdf/-char/enhttps://doaj.org/toc/1881-2198The effects of episulfidation on the frictional properties of mononuclear molybdenum dithiocarbamates having azaheterocycles were investigated. It was shown that the friction coefficients of the lubricants with the episulfided mononuclear molybdenum dithiocarbamates, as measured by the SRV friction test, were lower than those with non-episulfided ones. The friction coefficients of episulfided compounds are also similar to that of binuclear molybdenum dithiocarbamate, which is frequently used as friction modifier in lubricants in actual practice. The extent of decrease in friction in the SRV test differed with the number of carbon atoms in the azaheterocycles of the molybdenum compounds, suggesting that the thermal stability of the compounds affected the friction characteristics of the tested oils. The results from EPMA surface analyses of the disks from the SRV tests suggest that episulfidation of the molybdenum compounds led to effective formation of molybdenum disulfide film by the corresponding oils during the friction tests.Chihiro BandohHashimoto HashimotoMasatsugu KajitanEiji NagatomiNoriaki ShinodaToru SugiyamaIzumi TakayanagiHiroyukii TazakiJapanese Society of Tribologistsarticlemolybdenum dithiocarbamateepisulfidationlubricantadditivefrictionsurface analysisPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 5, Iss 4, Pp 199-202 (2010)
institution DOAJ
collection DOAJ
language EN
topic molybdenum dithiocarbamate
episulfidation
lubricant
additive
friction
surface analysis
Physics
QC1-999
Engineering (General). Civil engineering (General)
TA1-2040
Mechanical engineering and machinery
TJ1-1570
Chemistry
QD1-999
spellingShingle molybdenum dithiocarbamate
episulfidation
lubricant
additive
friction
surface analysis
Physics
QC1-999
Engineering (General). Civil engineering (General)
TA1-2040
Mechanical engineering and machinery
TJ1-1570
Chemistry
QD1-999
Chihiro Bandoh
Hashimoto Hashimoto
Masatsugu Kajitan
Eiji Nagatomi
Noriaki Shinoda
Toru Sugiyama
Izumi Takayanagi
Hiroyukii Tazaki
The Investigation of Improvement Effects on Friction Properties of Mononuclear MoDTCs having Azaheterocycles by Episulfidation
description The effects of episulfidation on the frictional properties of mononuclear molybdenum dithiocarbamates having azaheterocycles were investigated. It was shown that the friction coefficients of the lubricants with the episulfided mononuclear molybdenum dithiocarbamates, as measured by the SRV friction test, were lower than those with non-episulfided ones. The friction coefficients of episulfided compounds are also similar to that of binuclear molybdenum dithiocarbamate, which is frequently used as friction modifier in lubricants in actual practice. The extent of decrease in friction in the SRV test differed with the number of carbon atoms in the azaheterocycles of the molybdenum compounds, suggesting that the thermal stability of the compounds affected the friction characteristics of the tested oils. The results from EPMA surface analyses of the disks from the SRV tests suggest that episulfidation of the molybdenum compounds led to effective formation of molybdenum disulfide film by the corresponding oils during the friction tests.
format article
author Chihiro Bandoh
Hashimoto Hashimoto
Masatsugu Kajitan
Eiji Nagatomi
Noriaki Shinoda
Toru Sugiyama
Izumi Takayanagi
Hiroyukii Tazaki
author_facet Chihiro Bandoh
Hashimoto Hashimoto
Masatsugu Kajitan
Eiji Nagatomi
Noriaki Shinoda
Toru Sugiyama
Izumi Takayanagi
Hiroyukii Tazaki
author_sort Chihiro Bandoh
title The Investigation of Improvement Effects on Friction Properties of Mononuclear MoDTCs having Azaheterocycles by Episulfidation
title_short The Investigation of Improvement Effects on Friction Properties of Mononuclear MoDTCs having Azaheterocycles by Episulfidation
title_full The Investigation of Improvement Effects on Friction Properties of Mononuclear MoDTCs having Azaheterocycles by Episulfidation
title_fullStr The Investigation of Improvement Effects on Friction Properties of Mononuclear MoDTCs having Azaheterocycles by Episulfidation
title_full_unstemmed The Investigation of Improvement Effects on Friction Properties of Mononuclear MoDTCs having Azaheterocycles by Episulfidation
title_sort investigation of improvement effects on friction properties of mononuclear modtcs having azaheterocycles by episulfidation
publisher Japanese Society of Tribologists
publishDate 2010
url https://doaj.org/article/c2bd79316d724b1d853ffbd6c2103512
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