Improvement in Mixed Lubrication Characteristics of Electromagnetic Clutch Coated with DLC-Si Film by Controlling Surface Roughness and Providing Micro-Groove

This study investigated how the surface roughness of steel disks coated with a Si-containing diamond-like carbon (DLC-Si) film affects the dependence of the friction characteristics, in an oil-lubricated condition via the use of friction experiments and numerical analyses using mixed lubrication mod...

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Autores principales:	Junji Ando, Takeshi Yamaguchi, Kazuo Hokkirigawa
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2016
Materias:	coatings diamond-like carbon numerical analysis surface roughness μ-v slope 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/cf4cf490dfdc4b958d167e2d21959961
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spelling	oai:doaj.org-article:cf4cf490dfdc4b958d167e2d219599612021-11-05T09:21:49ZImprovement in Mixed Lubrication Characteristics of Electromagnetic Clutch Coated with DLC-Si Film by Controlling Surface Roughness and Providing Micro-Groove1881-219810.2474/trol.11.13https://doaj.org/article/cf4cf490dfdc4b958d167e2d219599612016-01-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/11/1/11_13/_pdf/-char/enhttps://doaj.org/toc/1881-2198This study investigated how the surface roughness of steel disks coated with a Si-containing diamond-like carbon (DLC-Si) film affects the dependence of the friction characteristics, in an oil-lubricated condition via the use of friction experiments and numerical analyses using mixed lubrication models. This study clearly demonstrated that a DLC-Si film with a surface roughness of RzJIS = 3 to 4 μm was an effective means of suppressing frictional vibration caused by stick-slip. In addition to finding that the surface roughness of steel disks coated with DLC-Si film could be used as a design guideline for the sliding surface of an electromagnetic clutch to provide excellent μ-v characteristics, it was also found that providing the mating plate with micro grooves that have a depth of 10 μm and a pitch of about 100 μm was an effective means of improving the friction characteristics. The results of this study suggested that the surface roughness and the micro grooves maintain solid contact even if the formation of oil film is enhanced as the sliding velocity increases, since these results in boundary lubrication.Junji AndoTakeshi YamaguchiKazuo HokkirigawaJapanese Society of Tribologistsarticlecoatingsdiamond-like carbonnumerical analysissurface roughnessμ-v slopePhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 11, Iss 1, Pp 13-23 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	coatings diamond-like carbon numerical analysis surface roughness μ-v slope Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	coatings diamond-like carbon numerical analysis surface roughness μ-v slope Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Junji Ando Takeshi Yamaguchi Kazuo Hokkirigawa Improvement in Mixed Lubrication Characteristics of Electromagnetic Clutch Coated with DLC-Si Film by Controlling Surface Roughness and Providing Micro-Groove
description	This study investigated how the surface roughness of steel disks coated with a Si-containing diamond-like carbon (DLC-Si) film affects the dependence of the friction characteristics, in an oil-lubricated condition via the use of friction experiments and numerical analyses using mixed lubrication models. This study clearly demonstrated that a DLC-Si film with a surface roughness of RzJIS = 3 to 4 μm was an effective means of suppressing frictional vibration caused by stick-slip. In addition to finding that the surface roughness of steel disks coated with DLC-Si film could be used as a design guideline for the sliding surface of an electromagnetic clutch to provide excellent μ-v characteristics, it was also found that providing the mating plate with micro grooves that have a depth of 10 μm and a pitch of about 100 μm was an effective means of improving the friction characteristics. The results of this study suggested that the surface roughness and the micro grooves maintain solid contact even if the formation of oil film is enhanced as the sliding velocity increases, since these results in boundary lubrication.
format	article
author	Junji Ando Takeshi Yamaguchi Kazuo Hokkirigawa
author_facet	Junji Ando Takeshi Yamaguchi Kazuo Hokkirigawa
author_sort	Junji Ando
title	Improvement in Mixed Lubrication Characteristics of Electromagnetic Clutch Coated with DLC-Si Film by Controlling Surface Roughness and Providing Micro-Groove
title_short	Improvement in Mixed Lubrication Characteristics of Electromagnetic Clutch Coated with DLC-Si Film by Controlling Surface Roughness and Providing Micro-Groove
title_full	Improvement in Mixed Lubrication Characteristics of Electromagnetic Clutch Coated with DLC-Si Film by Controlling Surface Roughness and Providing Micro-Groove
title_fullStr	Improvement in Mixed Lubrication Characteristics of Electromagnetic Clutch Coated with DLC-Si Film by Controlling Surface Roughness and Providing Micro-Groove
title_full_unstemmed	Improvement in Mixed Lubrication Characteristics of Electromagnetic Clutch Coated with DLC-Si Film by Controlling Surface Roughness and Providing Micro-Groove
title_sort	improvement in mixed lubrication characteristics of electromagnetic clutch coated with dlc-si film by controlling surface roughness and providing micro-groove
publisher	Japanese Society of Tribologists
publishDate	2016
url	https://doaj.org/article/cf4cf490dfdc4b958d167e2d21959961
work_keys_str_mv	AT junjiando improvementinmixedlubricationcharacteristicsofelectromagneticclutchcoatedwithdlcsifilmbycontrollingsurfaceroughnessandprovidingmicrogroove AT takeshiyamaguchi improvementinmixedlubricationcharacteristicsofelectromagneticclutchcoatedwithdlcsifilmbycontrollingsurfaceroughnessandprovidingmicrogroove AT kazuohokkirigawa improvementinmixedlubricationcharacteristicsofelectromagneticclutchcoatedwithdlcsifilmbycontrollingsurfaceroughnessandprovidingmicrogroove
_version_	1718444437364801536

Improvement in Mixed Lubrication Characteristics of Electromagnetic Clutch Coated with DLC-Si Film by Controlling Surface Roughness and Providing Micro-Groove

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