About: Coefficient of friction and wear of sputtered a-C thin coatings containing Mo

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The paper reports on preparation of similar to 3000 nm thick a-C coatings containing Mo, interrelationships between their mechanical properties, a coefficient of friction mu and wear rate k and the effect of Mo content in the a-C coating on these interrelationships. The Mo-C coatings were prepared by sputtering using an unbalanced magnetron (UM) equipped with a graphite targets ((empty set) = 100 mm, 99.9% purity) fixed to the UM cathode with Mo ring of different inner diameter (empty set)(i). The content of Mo in the a-C coating was controlled by (empty set)(i). It is shown that mu and k of the coating strongly depend not only on its hardness H but also on its effective Young's modulus E= E/(1 - nu(2)), the ratios H/E, H(3)/E(2) and the elastic recovery W(e); here E is the Young's modulus and v is the Poisson ratio. The ratio H(3)/E(2) characterizes the resistance of coating to plastic deformation. Coatings with a low amount of Mo composed of nanograins of carbides dispersed in a-C matrix exhibit low values of mu approximate to 0.07 and k approximate to 10(-7) mm(3)/Nm measured with WC ball at the rotation speed v = 0.05 m/s, total sliding length 1 = 1000 m and the load L = 2 N. The paper reports on preparation of similar to 3000 nm thick a-C coatings containing Mo, interrelationships between their mechanical properties, a coefficient of friction mu and wear rate k and the effect of Mo content in the a-C coating on these interrelationships. The Mo-C coatings were prepared by sputtering using an unbalanced magnetron (UM) equipped with a graphite targets ((empty set) = 100 mm, 99.9% purity) fixed to the UM cathode with Mo ring of different inner diameter (empty set)(i). The content of Mo in the a-C coating was controlled by (empty set)(i). It is shown that mu and k of the coating strongly depend not only on its hardness H but also on its effective Young's modulus E= E/(1 - nu(2)), the ratios H/E, H(3)/E(2) and the elastic recovery W(e); here E is the Young's modulus and v is the Poisson ratio. The ratio H(3)/E(2) characterizes the resistance of coating to plastic deformation. Coatings with a low amount of Mo composed of nanograins of carbides dispersed in a-C matrix exhibit low values of mu approximate to 0.07 and k approximate to 10(-7) mm(3)/Nm measured with WC ball at the rotation speed v = 0.05 m/s, total sliding length 1 = 1000 m and the load L = 2 N. (en)
Title	Coefficient of friction and wear of sputtered a-C thin coatings containing Mo Coefficient of friction and wear of sputtered a-C thin coatings containing Mo (en)
skos:prefLabel	Coefficient of friction and wear of sputtered a-C thin coatings containing Mo Coefficient of friction and wear of sputtered a-C thin coatings containing Mo (en)
skos:notation	RIV/68378271:_____/10:00438619!RIV15-AV0-68378271
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z10100520), Z(MSM4977751302)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Jäger, Aleš Musil, Jindřich
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	251098
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/10:00438619
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Mo-C coating; mechanical properties; friction; wear; magnetron sputtering (en)
http://linked.open.../riv/klicoveSlovo	wear magnetron sputtering friction mechanical properties Mo-C coating
http://linked.open...odStatuVydavatele	CH - Švýcarská konfederace
http://linked.open...ontrolniKodProRIV	[18D1D8E2D71D]
http://linked.open...i/riv/nazevZdroje	Surface and Coatings Technology
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	205
http://linked.open...iv/tvurceVysledku	Jäger, Aleš Musil, Jindřich Novák, P. Čerstvý, R.
http://linked.open...ain/vavai/riv/wos	000285487700055
http://linked.open...n/vavai/riv/zamer	Specific effects in condensed systems with reduced dimension and broken symmetry Procesy ve výbojovém plazmatu a nové tenkovrstvé materiály s unikátními vlastnostmi
issn	0257-8972
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.surfcoat.2010.07.038

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