2010 Fiscal Year Final Research Report
Tribological Properties and Applicability of Thermo-Reversible Gel-Lubricant
| Project/Area Number |
20560135
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Design engineering/Machine functional elements/Tribology
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| Research Institution | Saga University |
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Principal Investigator |
OHNO Nobuyoshi Saga University, 大学院・工学系研究科, 教授 (00039265)
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| Project Period (FY) |
2008 – 2010
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| Keywords | トライボロジー / 機械要素 / ゲル状潤滑剤 / 転がり軸受 / EHL / 状態図 / ゾル / ゲル転移 / 油不足 |
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| Research Abstract |
The tribological properties of a new and unique thermo-reversible Gel-Lubricant (TR Gel-Lube) were investigated. TR Gel-Lube, which includes 10-40% of amide type gelling agent in base fluid, is able to repetitive change from gel-state to liquid-state at the melting point of the gelling agent. High-pressure rheological tests were performed in order to characterize the behavior of base oil and TR Gel-Lube as a function of pressure and temperature. The effect of TR Gel-Lube on ball bearings fatigue life was carried out by systematic tests using thrust ball bearings. The results of L10 life tests of TR Gel-Lube showed a longer life than the conventional greases. This result was investigated from the oil film formation. It was found that the gelling agent played a key role in the lubricating properties. Some mechanisms such as adsorbed film formation and solid like formation are proposed.
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[Presentation] Behavior of Advanced Space Lubricant under Impact Load2010
Author(s)
N.Ohno, S.Mia, S.Nagao, Y.Tamura, S.Morita, H.Shiomi, S.Obara
Organizer
Proceedings of the STLE/ASME 2010 International Joint Tribology Conference, IJTC2010,pp.1-3. ISBN 978-0-7918-3890-7
Place of Presentation
San Francisco, California, USA
Year and Date
20101017-20101020
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[Presentation] 消音グリースの開発2010
Author(s)
榊原功次, 池島昌三, 岡崎末広, 伊熊亮介, 柿崎充弘, 大野信義
Organizer
日本トライボロジー学会トライボロジー会議予稿集,pp.299-300
Place of Presentation
福井
Year and Date
20100900
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[Presentation] Bearing Fatigue Life Tests of Advanced Base Oil for Space Applications under Vacuum and Atmospheric Environ- ments2010
Author(s)
N.Ohno, K.Sonoda, H.Tsuchida, S.Mia, S.Morita, H.Shiomi, S.Obara
Organizer
Conference Proceedings, 2010 STLE Annual Meeting & Exhibition, pp.1-3
Place of Presentation
Las Vegas, Nevada, USA
Year and Date
20100516-20100520
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[Presentation] Tribological Properties and Applicability of Thermo-Reversible Gel-Lubricants2009
Author(s)
N.Ohno, S.Mia, K.Masuhara, K.Sonoda, Y.Yamashita, Y.Tamura, S.Morita, Yuji Shitara
Organizer
Proceedings of the ASME/STLE International Joint Tribology Conference, IJTC2009, pp.1-3, ISBN 978-0-7918-3864-4
Place of Presentation
Memphis, Tennessee, USA
Year and Date
20091019-20091021
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