Entry behavior into Friction Interface and Forming Unstable Lubricating Accumulation of Graphene Oxide between SUJ2 Ball and Glass Disk under Boundary Lubrication
Carbon nanomaterials have been studied for their promising tribological properties under boundary lubrication. However, the behavior of carbon nanomaterials upon entering narrow friction interfaces under boundary lubrication is poorly understood. In this study, to clarify how graphene oxide (GO), wh...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Japanese Society of Tribologists
2020-06-01
|
| Series: | Tribology Online |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/trol/15/3/15_150/_pdf/-char/en |
| _version_ | 1818838389382709248 |
|---|---|
| author | Hiroshi Kinoshita Masanori Shibata Naohiro Matsumoto |
| author_facet | Hiroshi Kinoshita Masanori Shibata Naohiro Matsumoto |
| author_sort | Hiroshi Kinoshita |
| collection | DOAJ |
| description | Carbon nanomaterials have been studied for their promising tribological properties under boundary lubrication. However, the behavior of carbon nanomaterials upon entering narrow friction interfaces under boundary lubrication is poorly understood. In this study, to clarify how graphene oxide (GO), which is one of the carbon nanomaterials, enters and works on a friction interface under boundary lubrication, in situ observations of a friction interface between an SUJ2 ball and soda glass-lime disk in a GO water dispersion, with a load of 1 N, were conducted using optical microscopy. Isolated dispersed GO accumulated only in front of the contact areas. GO accumulations formed, grew, and peeled off due to the friction. Although the GO accumulations were significantly unstable, they functioned as friction reduction and anti-wear. We firstly found that the unstable GO lubricating accumulations that formed in front of the contact areas were able to widen between the ball and the disk similar to a wedge; this wedge effect would cause a decrease in friction and wear. Unlike the wedge effect under hydrodynamic lubrication, the GO accumulations that functioned as the wedge stayed on the ball surface. |
| first_indexed | 2024-12-19T03:37:37Z |
| format | Article |
| id | doaj.art-4df2078597ad47d29fba3dd3d0d44533 |
| institution | Directory Open Access Journal |
| issn | 1881-2198 |
| language | English |
| last_indexed | 2024-12-19T03:37:37Z |
| publishDate | 2020-06-01 |
| publisher | Japanese Society of Tribologists |
| record_format | Article |
| series | Tribology Online |
| spelling | doaj.art-4df2078597ad47d29fba3dd3d0d445332022-12-21T20:37:20ZengJapanese Society of TribologistsTribology Online1881-21982020-06-0115315015310.2474/trol.15.150trolEntry behavior into Friction Interface and Forming Unstable Lubricating Accumulation of Graphene Oxide between SUJ2 Ball and Glass Disk under Boundary LubricationHiroshi Kinoshita0Masanori Shibata1Naohiro Matsumoto2Department of Mechanical Engineering, Graduate School of Engineering, University of HyogoDepartment of Mechanical Engineering, Graduate School of Engineering, University of HyogoDepartment of Mechanical Engineering, Graduate School of Engineering, University of HyogoCarbon nanomaterials have been studied for their promising tribological properties under boundary lubrication. However, the behavior of carbon nanomaterials upon entering narrow friction interfaces under boundary lubrication is poorly understood. In this study, to clarify how graphene oxide (GO), which is one of the carbon nanomaterials, enters and works on a friction interface under boundary lubrication, in situ observations of a friction interface between an SUJ2 ball and soda glass-lime disk in a GO water dispersion, with a load of 1 N, were conducted using optical microscopy. Isolated dispersed GO accumulated only in front of the contact areas. GO accumulations formed, grew, and peeled off due to the friction. Although the GO accumulations were significantly unstable, they functioned as friction reduction and anti-wear. We firstly found that the unstable GO lubricating accumulations that formed in front of the contact areas were able to widen between the ball and the disk similar to a wedge; this wedge effect would cause a decrease in friction and wear. Unlike the wedge effect under hydrodynamic lubrication, the GO accumulations that functioned as the wedge stayed on the ball surface.https://www.jstage.jst.go.jp/article/trol/15/3/15_150/_pdf/-char/enentry behaviorwedge effectboundary lubricationfriction interfacegraphene oxidecarbon nanomaterials |
| spellingShingle | Hiroshi Kinoshita Masanori Shibata Naohiro Matsumoto Entry behavior into Friction Interface and Forming Unstable Lubricating Accumulation of Graphene Oxide between SUJ2 Ball and Glass Disk under Boundary Lubrication Tribology Online entry behavior wedge effect boundary lubrication friction interface graphene oxide carbon nanomaterials |
| title | Entry behavior into Friction Interface and Forming Unstable Lubricating Accumulation of Graphene Oxide between SUJ2 Ball and Glass Disk under Boundary Lubrication |
| title_full | Entry behavior into Friction Interface and Forming Unstable Lubricating Accumulation of Graphene Oxide between SUJ2 Ball and Glass Disk under Boundary Lubrication |
| title_fullStr | Entry behavior into Friction Interface and Forming Unstable Lubricating Accumulation of Graphene Oxide between SUJ2 Ball and Glass Disk under Boundary Lubrication |
| title_full_unstemmed | Entry behavior into Friction Interface and Forming Unstable Lubricating Accumulation of Graphene Oxide between SUJ2 Ball and Glass Disk under Boundary Lubrication |
| title_short | Entry behavior into Friction Interface and Forming Unstable Lubricating Accumulation of Graphene Oxide between SUJ2 Ball and Glass Disk under Boundary Lubrication |
| title_sort | entry behavior into friction interface and forming unstable lubricating accumulation of graphene oxide between suj2 ball and glass disk under boundary lubrication |
| topic | entry behavior wedge effect boundary lubrication friction interface graphene oxide carbon nanomaterials |
| url | https://www.jstage.jst.go.jp/article/trol/15/3/15_150/_pdf/-char/en |
| work_keys_str_mv | AT hiroshikinoshita entrybehaviorintofrictioninterfaceandformingunstablelubricatingaccumulationofgrapheneoxidebetweensuj2ballandglassdiskunderboundarylubrication AT masanorishibata entrybehaviorintofrictioninterfaceandformingunstablelubricatingaccumulationofgrapheneoxidebetweensuj2ballandglassdiskunderboundarylubrication AT naohiromatsumoto entrybehaviorintofrictioninterfaceandformingunstablelubricatingaccumulationofgrapheneoxidebetweensuj2ballandglassdiskunderboundarylubrication |