Effects of Hydrogen on Frictional Properties of DLC Films
The tribological behavior of diamond-like carbon films (DLC) is strongly dependent on the hydrogen content, sp2/sp3 ratio, and sliding environment. Some hydrogenated amorphous carbon films (a-C:H) exhibit superlow friction in hydrogen conditions. However, previous works have not clarified the domina...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Japanese Society of Tribologists
2015-12-01
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| Series: | Tribology Online |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/trol/10/6/10_397/_pdf/-char/en |
| _version_ | 1818569150261362688 |
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| author | Hikaru Okubo Kenta Oshima Ryo Tuboi Chiharu Tadokoro Shinya Sasaki |
| author_facet | Hikaru Okubo Kenta Oshima Ryo Tuboi Chiharu Tadokoro Shinya Sasaki |
| author_sort | Hikaru Okubo |
| collection | DOAJ |
| description | The tribological behavior of diamond-like carbon films (DLC) is strongly dependent on the hydrogen content, sp2/sp3 ratio, and sliding environment. Some hydrogenated amorphous carbon films (a-C:H) exhibit superlow friction in hydrogen conditions. However, previous works have not clarified the dominant factors of the superlow friction phenomena of DLC films. In this research, we focused on the effects of hydrogen derived from the surrounding atmosphere and the hydrogen within the DLC films on superlow friction phenomena. To investigate these effects, friction tests were conducted on three DLC films having different hydrogen contents (0, and 18, 30 at%) in the air and in low-pressure-hydrogen conditions at various hydrogen pressures. After the friction tests, the wear tracks were examined by confocal laser scanning microscopy, Raman spectroscopy, elastic recoil detection (ERDA) analysis, and time-of-flight secondary ion mass spectrometry (TOF-SIMS). The hydrogen derived from the surrounding atmosphere and the formation of the hydrogen-rich tribofilm were key factors for the superlow friction phenomena. |
| first_indexed | 2024-12-14T06:44:20Z |
| format | Article |
| id | doaj.art-311c8283493049aea73bad1bbb355fa3 |
| institution | Directory Open Access Journal |
| issn | 1881-2198 |
| language | English |
| last_indexed | 2024-12-14T06:44:20Z |
| publishDate | 2015-12-01 |
| publisher | Japanese Society of Tribologists |
| record_format | Article |
| series | Tribology Online |
| spelling | doaj.art-311c8283493049aea73bad1bbb355fa32022-12-21T23:13:07ZengJapanese Society of TribologistsTribology Online1881-21982015-12-0110639740310.2474/trol.10.397trolEffects of Hydrogen on Frictional Properties of DLC FilmsHikaru Okubo0Kenta Oshima1Ryo Tuboi2Chiharu Tadokoro3Shinya Sasaki4Graduate School Tokyo University of ScienceGraduate School Tokyo University of ScienceDaido University Tokyo University of Science Tokyo University of Science The tribological behavior of diamond-like carbon films (DLC) is strongly dependent on the hydrogen content, sp2/sp3 ratio, and sliding environment. Some hydrogenated amorphous carbon films (a-C:H) exhibit superlow friction in hydrogen conditions. However, previous works have not clarified the dominant factors of the superlow friction phenomena of DLC films. In this research, we focused on the effects of hydrogen derived from the surrounding atmosphere and the hydrogen within the DLC films on superlow friction phenomena. To investigate these effects, friction tests were conducted on three DLC films having different hydrogen contents (0, and 18, 30 at%) in the air and in low-pressure-hydrogen conditions at various hydrogen pressures. After the friction tests, the wear tracks were examined by confocal laser scanning microscopy, Raman spectroscopy, elastic recoil detection (ERDA) analysis, and time-of-flight secondary ion mass spectrometry (TOF-SIMS). The hydrogen derived from the surrounding atmosphere and the formation of the hydrogen-rich tribofilm were key factors for the superlow friction phenomena.https://www.jstage.jst.go.jp/article/trol/10/6/10_397/_pdf/-char/endiamond-like carbonsuperlow frictionhydrogentribologytribofilm |
| spellingShingle | Hikaru Okubo Kenta Oshima Ryo Tuboi Chiharu Tadokoro Shinya Sasaki Effects of Hydrogen on Frictional Properties of DLC Films Tribology Online diamond-like carbon superlow friction hydrogen tribology tribofilm |
| title | Effects of Hydrogen on Frictional Properties of DLC Films |
| title_full | Effects of Hydrogen on Frictional Properties of DLC Films |
| title_fullStr | Effects of Hydrogen on Frictional Properties of DLC Films |
| title_full_unstemmed | Effects of Hydrogen on Frictional Properties of DLC Films |
| title_short | Effects of Hydrogen on Frictional Properties of DLC Films |
| title_sort | effects of hydrogen on frictional properties of dlc films |
| topic | diamond-like carbon superlow friction hydrogen tribology tribofilm |
| url | https://www.jstage.jst.go.jp/article/trol/10/6/10_397/_pdf/-char/en |
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