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...

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Autores principales:	Hikaru Okubo, Kenta Oshima, Ryo Tuboi, Chiharu Tadokoro, Shinya Sasaki
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2015
Materias:	diamond-like carbon superlow friction hydrogen tribology tribofilm Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/311c8283493049aea73bad1bbb355fa3
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spelling	oai:doaj.org-article:311c8283493049aea73bad1bbb355fa32021-11-05T09:22:05ZEffects of Hydrogen on Frictional Properties of DLC Films1881-219810.2474/trol.10.397https://doaj.org/article/311c8283493049aea73bad1bbb355fa32015-12-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/10/6/10_397/_pdf/-char/enhttps://doaj.org/toc/1881-2198The 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.Hikaru OkuboKenta OshimaRyo TuboiChiharu TadokoroShinya SasakiJapanese Society of Tribologistsarticlediamond-like carbonsuperlow frictionhydrogentribologytribofilmPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 10, Iss 6, Pp 397-403 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	diamond-like carbon superlow friction hydrogen tribology tribofilm Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	diamond-like carbon superlow friction hydrogen tribology tribofilm Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Hikaru Okubo Kenta Oshima Ryo Tuboi Chiharu Tadokoro Shinya Sasaki Effects of Hydrogen on Frictional Properties of DLC Films
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.
format	article
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
title	Effects of Hydrogen on Frictional Properties of DLC Films
title_short	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_sort	effects of hydrogen on frictional properties of dlc films
publisher	Japanese Society of Tribologists
publishDate	2015
url	https://doaj.org/article/311c8283493049aea73bad1bbb355fa3
work_keys_str_mv	AT hikaruokubo effectsofhydrogenonfrictionalpropertiesofdlcfilms AT kentaoshima effectsofhydrogenonfrictionalpropertiesofdlcfilms AT ryotuboi effectsofhydrogenonfrictionalpropertiesofdlcfilms AT chiharutadokoro effectsofhydrogenonfrictionalpropertiesofdlcfilms AT shinyasasaki effectsofhydrogenonfrictionalpropertiesofdlcfilms
_version_	1718444401021157376

Effects of Hydrogen on Frictional Properties of DLC Films

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