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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Japanese Society of Tribologists
2010
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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) |
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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 |
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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 |
work_keys_str_mv |
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1718444374921052160 |