| Budget Amount *help |
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2017: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
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| Outline of Final Research Achievements |
In this study, in situ and molecular scale observation of solidification of lubricant films was conducted under elastohydrodynamic lubrication conditions in which a high pressure of the 1 GPa order is generated. The Fourier-Transform Infrared Spectroscopy was employed to analysis the solidified film. A fatty alcohol of 1-dodecanol, which is though to be solidification, and Poly-alpha-olefin (PAO) were used as lubricants for tests. For 1-doecanol, the absorption spectrum of the lubricant film indicated that a vibration of molecules seemed to be restricted and had the same shape as that of the solidified film at less than the melting temperature. On the other hand, for PAO, the absorption spectrum kept the same shape as that in the liquid state. As described above, this study could clarify the solidification phenomenon of lubricated films from the standpoint of molecular scale.
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