2022 Fiscal Year Final Research Report
Analysis of tribological mechanisms of graphene oxide and MoDTC by the SEM friction interface observation method
Project/Area Number |
20H02057
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 18040:Machine elements and tribology-related
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Research Institution | University of Hyogo |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
松本 直浩 兵庫県立大学, 工学研究科, 准教授 (80843987)
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Keywords | 摩擦界面 / その場観察 / SEM / 酸化グラフェン |
Outline of Final Research Achievements |
We have developed the first device for in-situ observation of frictional interfaces with a scanning electron microscope (SEM) using an electron transparent film and a micro-tribometer. In this study, a friction interface between SUJ2 ball and graphene oxide adsorbed on an electron transparent film were investigated. Graphene oxide was sparsely adsorbed on the electron transparent film. After the friction, most of the surface of the electron transparent film was covered with graphene oxide. This is thought to be due to the stretching of graphene oxide adsorbed in multiple layers by friction. In addition, the friction interface in a lubricating oil was observed by SEM even, and it was found that an amount of lubricating oil remained at the friction interface. However, lubricating oil is greatly affected by electron beam irradiation, and intermittent observation confirmed the formation of a tribofilm-like substance.
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Free Research Field |
トライボロジー
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Academic Significance and Societal Importance of the Research Achievements |
これまで全くSEMで観察できていなかった酸化グラフェン摩擦界面を観察できた.摩擦後に酸化グラフェンが引き延ばされることは初めての発見で,今後のナノ材料を用いた摩擦研究に非常に意義のある結果であると思われる.さらに潤滑油中の摩擦界面もSEMで観察できた.驚くべきことに,潤滑油中でも摩擦界面を観察でき,メニスカスや潤滑油があるところでも相手表面が観察できることなどがわかった.潤滑油中の摩擦は観察手段が限られるが,1つ観察手段が増えたこととなる.これらの観察によって,摩擦・摩耗を下げることができれば低炭素社会に寄与できることとなる.
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