Tribological effect of iron oxide residual on the DLC film surface under seawater and saline solutions
| Autor: | Evaldo José Corat, Vladimir Jesus Trava-Airoldi, D.A. Lima-Oliveira, Romina Paula Castro Costa, Fernanda Roberta Marciano |
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| Rok vydání: | 2011 |
| Předmět: |
Materials science
Metallurgy Iron oxide chemistry.chemical_element Surfaces and Interfaces Tribology Condensed Matter Physics Surface energy Methane Surfaces Coatings and Films chemistry.chemical_compound Adsorption chemistry Plasma-enhanced chemical vapor deposition Materials Chemistry Seawater Carbon |
| Zdroj: | Surface Science. 605:783-787 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/j.susc.2011.01.018 |
| Popis: | This paper discusses the seawater and saline solutions effects on the tribological behavior of diamond-like carbon (DLC) films. The adsorption of Fe on DLC surface is one of the mechanisms that is believed to be the cause of the decrease in dispersive component of the surface energy and increase of the I D /I G ratio leading to low friction coefficient and wear rate under corrosive environments. Tribological behaviors DLC films were experimentally evaluated under corrosive environments by using steel ball and DLC coated steel flat under rotational sliding conditions. The DLC films were prepared on 440 stainless steel disks by DC-pulsed PECVD using methane as a precursor gas. Two different set of tribological system was assembled, one when the liquids and the pairs were put inside of a stainless steel vessel and others inside of a PTFE. Every tribological test was performed under 10 N normal load120 mms − 1 of sliding speed. The friction coefficients were evaluated during 1000 cycles. |
| Databáze: | OpenAIRE |
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