@InProceedings{CapoteGutiCapo:2022:DiCaCo,
               author = "Capote, Gil and Gutierrez Bernal, Jes{\'u}s Manuel and Capote 
                         S{\'a}nchez, Ariel",
          affiliation = "{Universidad Nacional de Colombia} and {Fundaci{\'o}n 
                         Universitaria Los Libertadores} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Diamond-like carbon coatings deposited by the DC-pulsed PACVD 
                         method with active screen on Ti6Al4V substrate",
                 year = "2022",
         organization = "Brazil MRS Meeting, 20.",
             abstract = "Diamond-like carbon (DLC) protective coatings were deposited on 
                         Ti6Al4V substrates using a DC-pulsed plasma assisted chemical 
                         vapor deposition (PACVD) technique with active screen and hexane 
                         (C6H14) as a precursor. In order to obtain a high adhesion of the 
                         coatings on the substrates, a thin amorphous hydrogenated silicon 
                         interlayer (a-Si:H) was synthesized using tetramethylsilane 
                         (Si(CH\₃)\₄) as a precursor. The microstructural, 
                         mechanical and tribological properties, as well as the corrosion 
                         resistance and adhesion of the coatings were determined. 
                         Additionally, bactericidal tests were performed using two bacteria 
                         (Escherichia Coli and Pseudomonas Aureginosa) and one fungus 
                         (Candida Albicans). This deposition technique allowed obtaining 
                         DLC coatings with excellent microstructural properties and with 
                         hydrogen contents less than 25%. The use of hexane as a precursor 
                         gas made it possible to achieve a high deposition rate of 
                         approximately 3 \μm/h. The amorphous silicon interlayer 
                         allowed the internal stresses reduction (\≤0.9 GPa) and, 
                         consequently, obtaining a high adherence of the coatings to the 
                         substrates, reaching critical load values higher than 42 N. The 
                         coatings obtained presented attractive mechanical and tribological 
                         properties, while the potentiodynamic polarization tests also 
                         showed a high protection of the coatings against the effects of 
                         corrosion. The DLC protective film increased the bactericidal 
                         properties of the substrate, making it attractive for biomedical 
                         applications. These results suggest that DLC protective coatings 
                         can be used in applications where hard surfaces, resistant to 
                         abrasive wear and corrosion, with low COF and high deposition rate 
                         are required.",
  conference-location = "Foz do Igua{\c{c}}u, PR",
      conference-year = "25-29 set. 2022",
           targetfile = "
                         
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        urlaccessdate = "2024, Apr. 26"
}