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@Article{CapoteOlayTrav:2014:AdAmHy,
               author = "Capote, G. and Olaya, J. J. and Trava-Airoldi, Vladimir Jesus",
          affiliation = "{Universidad Nacional de Colombia} and {Universidad Nacional de 
                         Colombia} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Adherent amorphous hydrogenated carbon coatings on steel surfaces 
                         deposited by enhanced asymmetrical bipolar pulsed-DC PECVD method 
                         and hexane as precursor",
              journal = "Surface and Coatings Technology",
                 year = "2014",
               volume = "251",
                pages = "276--282",
             keywords = "Adhesion, Amorphous carbon, Amorphous silicon, Bias voltage, 
                         Carbon films, Chemical vapor deposition, Coatings, Corrosion, 
                         Corrosion resistance, Film growth, Hardness, Hexane, 
                         Hydrogenation, Ion implantation, Mechanical properties, 
                         Microstructure, Phase interfaces, Plasma enhanced chemical vapor 
                         deposition, Sodium chloride, Substrates, Tribology, Vapors, 
                         Amorphous hydrogenated carbon, Amorphous hydrogenated carbon 
                         (a-C:H) films, Electrochemical potentiodynamic polarizations, 
                         Mechanical and tribological properties, Nanoindentation 
                         experiments, Plasma enhanced chemical vapor deposition systems, 
                         Raman scattering spectroscopy, Tribological properties, Amorphous 
                         films.",
             abstract = "In order to overcome the high residual stress and low adherence of 
                         amorphous hydrogenated carbon (a-C:H) films on steel substrates, a 
                         thin amorphous silicon interlayer was deposited as an interface 
                         between the substrate and a-C:H films produced by using hexane 
                         vapor as a precursor gas. Amorphous silicon interlayer and a-C:H 
                         films were grown by employing a modified and asymmetrical bipolar 
                         pulsed-DC plasma enhanced chemical vapor deposition (PECVD) 
                         system, using silane and hexane atmospheres, respectively. The 
                         a-C:H films were analyzed according to their microstructure, and 
                         mechanical and tribological properties as a function of self-bias 
                         voltage. The chemical composition and hydrogen content of the 
                         a-C:H films were estimated by means of Raman scattering 
                         spectroscopy. The total stress was evaluated through the 
                         measurement of the substrate curvature, using a profilometer, 
                         while nanoindentation experiments helped determine the films' 
                         hardness. The friction coefficient and critical load were 
                         determined by using a tribometer. The corrosion resistance was 
                         evaluated by electrochemical potentiodynamic polarization 
                         techniques on a 3% solution of sodium chloride (NaCl). The results 
                         showed that the use of the amorphous silicon interlayer, deposited 
                         by low energy ion implantation, improved the a-C:H film deposition 
                         onto steel substrates, producing good adhesion, low compressive 
                         stress, and a high hardness. The composition, the microstructure, 
                         and the mechanical and tribological properties of the films were 
                         strongly dependent on the self-bias voltages. These results 
                         suggest that a combination of a modified pulsed-DC PECVD system 
                         and hexane as a precursor gas for growing a-C:H films may 
                         represent a good and new alternative for coating scaling for 
                         mechanical and tribological applications.",
                  doi = "10.1016/j.surfcoat.2014.04.037",
                  url = "http://dx.doi.org/10.1016/j.surfcoat.2014.04.037",
                 issn = "0257-8972",
                label = "scopus 2014-11 CapoteOlayTrav:2014:AdAmHy",
             language = "en",
           targetfile = "Capote_Adherent.pdf",
        urlaccessdate = "05 dez. 2020"
}


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