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Growth of Adsorbed Additive Layer for Further Friction Reduction
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- Hirayama, Tomoko
- Department of Mechanical Engineering, Doshisha University･PRESTO, Japan Science and TechnologyAgency
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- Maeda, Masayuki
- NSK Ltd.
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- Sasaki, Yuto
- Graduate School of Science andEngineering, Doshisha University
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- Matsuoka, Takashi
- Department of Mechanical Engineering, Doshisha University
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- Komiya, Hiroshi
- Department of Mechanical Engineering, Doshisha University
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- Hino, Masahiro
- Kyoto University Research ReactorInstitute (KURRI)
Bibliographic Information
- Other Title
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- Shear property of oil film containing oiliness additive in narrow gap measured with newly‐developed parallel‐disk viscometer supported by aerostatic bearing
- Shear property of oil film containing oiliness additive in narrow gap measured with newly-developed parallel‐disk viscometer supported by aerostatic bearing
Description
Boundary lubrication is one of the most interesting topics in the field of tribology, and a lot of studies have been conducted from the past for understanding the behaviour of boundary lubrication films. General boundary lubrication films are formed by the adsorption of additives mixed into lubricant, and then the tribological performances are drastically improved in many cases. However, there is still room for discussion on the “actual” behaviour of adsorbed additive layer in the tribological condition, that is, under high pressure and/or with external forces. This paper showed the “growing” behaviour of an adsorbed additive layer onto metal surface due to high pressure by means of neutron reflectometry in conjunction with the result obtained through cross‐sectional imaging by frequency‐modulation atomic force microscopy. In addition, the nanotribological study using atomic force microscopy with a colloidal probe showed that the coefficient of friction in the pre‐scratched area was lower than that in the non‐scratched area and that the reduction ratio for lubricant with additive was higher than that for lubricant without additive. This result indicates that growth of the adsorbed additive layer contributed more greatly to a reduction in the coefficient of friction.
Journal
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- Lubrication Science
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Lubrication Science 31 (5), 171-178, 2019-07-03
Wiley
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Keywords
Details 詳細情報について
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- CRID
- 1050001338517212672
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- ISSN
- 09540075
- 15576833
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- DOI
- 10.1002/ls.1485
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- HANDLE
- 2433/244137
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- IRDB
- Crossref
- KAKEN
- OpenAIRE
