Tribological properties and characterization of diamond-like carbon coatings with silicon prepared by plasma-assisted chemical vapour deposition

Oguri, Kazuyuki; Arai, Tohru

doi:10.1016/0257-8972(91)90344-v

Cited by 192 publications

(71 citation statements)

References 17 publications

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“…The tribology of Si doped a-C:H coatings against steel in ambient air was investigated first by Oguri et al [34] in sliding wear tests of 10-50 N load and 0.2-3 m/s velocity. A low coefficient of friction of 0.04 was observed, contrary to a coefficient of friction of 0.12 for undoped coatings.…”

Section: The Effects Of Doping and Alloyingmentioning

confidence: 99%

The friction of diamond-like carbon coatings in a water environment

et al. 2013

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Diamond-like carbon (DLC) coatings are known to provide beneficial mechanical and tribological properties in harsh environments. Their combination of high wear resistance and low friction has led to their extensive use in any number of industries. The tribological performance of a DLC coating is varied however, and the frictional response is known to be strongly dependent on the surrounding environment, as well as the material composition and bonding structure of the DLC coating. This paper presents an up-to-date review on the friction of DLC coatings in a water environment, with a special focus on transfer layer formation and tribochemistry.

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Section: The Effects Of Doping and Alloyingmentioning

confidence: 99%

The friction of diamond-like carbon coatings in a water environment

et al. 2013

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“…(15)(16)(17)(18)(19)(20) DLCs dopados com silício possuem excelentes propriedades tribológicas, tais como baixo atrito e alta durabilidade, além de alta estabilidade quanto a umidade e temperatura. Adicionalmente, a adição de silício melhora a topografia de superfície e a energia de adesão, (21) tornando esses materiais fortes candidatos para a indústria de refrigeração.…”

Section: Resultsunclassified

“…(22,23) Assim, o controle do atrito e desgaste pode ser conseguido pela análise, entre outros, da natureza do substrato, filme DLC, filmes para o suporte mecânico da carga, e, evidentemente, o ambiente. (20)(21)(22)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34) Na grande maioria das vezes, uma camada triboquímica é formada na superfície de deslizamento sendo, aparentemente, o fator controlador da tribologia do contato. A natureza da contraface pode influenciar significativamente a espessura e a natureza da tribocamada.…”

Section: Resultsunclassified

Tribocamada Formada Em Revestimentos Multifuncionais: Influência Do Ambiente

Mello¹,

Binder²

2012

TMM

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ResumoNa maioria dos contatos tribológicos uma tribo camada se forma entre as superfícies em movimento relativo. O ambiente tem um papel crucial na cinética de formação desta tribocamada e, desta forma, afeta significativamente atrito e desgaste. O presente trabalho apresenta o efeito de alguns gases no comportamento tribológico de revestimentos multifuncionais. Os revestimentos foram ensaiados em um tribômetro alternativo operando em altas pressões de câmara. Foram avaliados o coeficiente de atrito, os mecanismos de desgaste e a taxa de desgaste do corpo e contra-corpo. Tanto o coeficiente de atrito quanto as taxas de desgaste do corpo (revestimento multifuncional SiDLC+NCr) e contra-corpo (aço 52100) são afetados pela atmosfera presente na câmara de ensaio (ar, CO 2 e R600a) . Espectros Raman das tribocamadas apresentam dois picos típicos de DLC (Bandas G e D) bem como bandas de baixa intensidade para baixas frequências características de óxidos à base de ferro produzidos pela reação do contra-corpo com o ambiente. A presença de uma intensa banda grafítica (G) aparentemente induz o melhor desempenho tribológico do sistema operando em ambiente R600a. Palavras-chave: Revestimentos; Comportamento tribológico; Meio ambiente. TRIBOLAYER FORMED ON MULTIFUNCTIONAL COATINGS: INFLUENCE OF THE ENVIRONMENT AbstractFriction and wear control can be achieved primarily by considering the nature of the counter faces, together with the environmental conditions. In most cases, a transfer film is found on the sliding surfaces. Environment plays a crucial role on the kinetics of formation and on the composition of the transfer film, and thus strongly influences friction levels and wear rates. In this paper, the effect of the actual environment (refrigerant) present in hermetic compressors on the tribological behaviour of a Si rich multifunctional DLC coating deposited on 1020 steel is analyzed. Unlubricated reciprocating pin-on-disk tests are performed using a High Pressure Tribometer under different atmospheres (Air, CO 2 and R600a). Samples tested in R600a environment present the lowest friction coefficient and the lowest wear rate for both body and counter-body. Key words: Coatings; Tribological behaviour; Environment. INTRODUÇÃOA indústria da refrigeração mudou, recentemente, dos refrigerantes clorofluorcarbonados (CFC), tais como as R12 e R22, para os refrigerantes hidrofluorcarbonados (HFC) R134A e R410A,(1) muito menos nocivos ao meio ambiente, em particular à camada de ozônio. Mais recentemente, em particular na Europa, tem havido uma transição para o isobutano (R600a) ainda menos nocivo ao meio ambiente. Na ultima década, observa-se um grande interesse no sentido de usar CO 2 em substituição aos ecologicamente mais perigosos CFC e HFC.(2-6) Muito embora estudos recentes de Lee et al. (2) e Demas e Polycarpou (7) tenham avançado, o conhecimento da tribologia em ambientes de CO 2 ainda não é bem conhecido, sendo seu avanço vital para o progresso da indústria de refrigeração e mesmo para a conquista espacial (Marte). Neste ...

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“…In the last decade, many working groups reported that several properties of DLC films are improved by doping with a "hetero element" [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. Especially, titanium (Ti)-doped DLC films have been widely investigated because they are expected to improve sliding properties, burning resistance, and oxidation resistance [22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Resistance of Hydrogenated Titanium-Doped Diamond-Like Carbon Film to Hyperthermal Atomic Oxygen

Kidena

Endo

Takamatsu

et al. 2015

Metals

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The effect of irradiation by a hyperthermal-atomic-oxygen beam on hydrogenated titanium-doped diamond-like carbon (hydrogenated Ti-DLC) films, applied as a solid lubricant for equipment used in low-earth orbit was investigated. Unlike the film thickness of hydrogenated non-doped DLC films, that of hydrogenated Ti-DLC films was found to be constant after the films were exposed to atomic oxygen. In addition, bulk composition of the hydrogenated Ti-DLC film stayed constant, and in particular, hydrogen content in the film did not decrease. These results indicate that a hydrogenated Ti-DLC film can keep its low friction properties under vacuum. Surface chemical analysis showed that a titanium-oxide layer is form on the film by exposure to atomic oxygen. The thickness of the titanium oxide layer was estimated to be about 5 nm from the element distribution in the depth direction of the hydrogenated Ti-DLC films. The titanium-oxide OPEN ACCESSMetals 2015, 5 1958 layer was interpreted to protect the bulk film from erosion by hyperthermal atomic oxygen.

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Tribological properties and characterization of diamond-like carbon coatings with silicon prepared by plasma-assisted chemical vapour deposition

Cited by 192 publications

References 17 publications

The friction of diamond-like carbon coatings in a water environment

The friction of diamond-like carbon coatings in a water environment

Tribocamada Formada Em Revestimentos Multifuncionais: Influência Do Ambiente

Resistance of Hydrogenated Titanium-Doped Diamond-Like Carbon Film to Hyperthermal Atomic Oxygen

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