Thickness and Density of Additive Adsorbed Layer on Metal Surface Measured by Neutron Reflectometry and Its Effect on Tribological Properties
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- HIRAYAMA Tomoko
- Doshisha Univ., Dept. of Mechanical Engineering
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- TORII Takashi
- 同志社大学 工学研究科
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- KONISHI Yohei
- 同志社大学 工学研究科
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- MAEDA Masayuki
- 同志社大学 工学研究科
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- MATSUOKA Takashi
- Doshisha Univ., Dept. of Mechanical Engineering
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- INOUE Kazuko
- 早稲田大学 理工学研究所
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- HINO Masahiro
- 京都大学原子炉実験所
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- YAMAZAKI Dai
- 日本原子力研究開発機構 量子ビーム応用研究部門
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- TAKEDA Masayasu
- 日本原子力研究開発機構 量子ビーム応用研究部門
Bibliographic Information
- Other Title
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- 中性子反射率法を用いた金属表面における添加剤吸着層の厚みおよび密度測定とそのトライボロジー特性
Abstract
Thicknesses and densities of additive adsorbed layers on metal surfaces under lubrication were directly measured by neutron reflectometry. Two kinds of metal surfaces, iron and copper, on ultra-flat silicon blocks were prepared by physical vacuum deposition. After that, each target surface was analyzed by neutron reflectometer SUIREN in air, in base oil (poli-alpha-olefin) and in base oil with deuterated acids as additives. Fitting operation based on Parratt's theory showed that the thicknesses of additive adsorbed layer on the iron and copper surfaces were quite thin, only 1.5-2.0 nm. The friction coefficients of the metal surfaces, measured by a ball-on-disk friction tester, decreased considerably when the additive was added to the base oil. We concluded that the additive adsorbed layers on the metal surfaces considerably affected friction properties despite being only several nanometers thick.
Journal
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- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C
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TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C 77 (779), 2884-2893, 2011
The Japan Society of Mechanical Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390282681363490560
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- NII Article ID
- 130001055328
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- ISSN
- 18848354
- 03875024
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed