@Article{SilvaTravChun:2011:SuMo61,
               author = "Silva, W. M. and Trava-Airoldi, Vladimir Jesus and Chung, Y. W.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and Department of 
                         Materials Science and Engineering, Northwestern University, 2220 
                         N. Campus Drive, Evanston, IL 60208-3108, USA",
                title = "Surface modification of 6150 steel substrates for the deposition 
                         of thick and adherent diamond-like carbon coatings",
              journal = "Surface and Coatings Technology",
                 year = "2011",
               volume = "205",
               number = "12, 15",
                pages = "3703--3707",
                month = "Mar.",
             keywords = "Diamond-like Carbon, Carbonitriding, Diffusion, Hardness, Scratch 
                         Testing, Adhesion, STAINLESS-STEEL, PLASMA, FILMS, GROWTH, 
                         MECHANISM, ADHESION, IRON.",
             abstract = "Because of the high residual compressive stress normally 
                         accompanying the growth of diamond-like carbon (DLC) coatings and 
                         the large mismatch in the thermal expansion coefficient between 
                         DLC and steel, it is difficult to grow DLC coatings much thicker 
                         than 0.25 \μm on steels. This paper describes our attempt to 
                         overcome this thickness limitation by a sequence of 
                         carbonitriding, carburizing and equilibration pre-treatments of 
                         the steel surface, followed by DLC coating deposition, all 
                         conducted within the same deposition system without breaking 
                         vacuum. These pre-treatments resulted in a surface with a graded 
                         composition and hardness profile. Such a graded interface is 
                         expected to reduce the interfacial energy, decrease thermal 
                         mismatch between the coating and the substrate, and thus improve 
                         coating adhesion. X-ray diffraction revealed the formation of 
                         various hard carbide and nitride phases. Raman spectroscopy showed 
                         that the modified steel surface just before DLC deposition 
                         exhibits local carbon bonding characteristics similar to DLC. 
                         Pulsed dc plasma-enhanced chemical vapor deposition was used to 
                         deposit one-micron thick DLC on these steel surfaces. The coating 
                         hardness was ~ 1819 GPa. Its adhesion on the steel substrate was 
                         measured by scratch testing and was found to be comparable to 
                         thick, adherent DLC coatings deposited by other methods.",
                  doi = "10.1016/j.surfcoat.2011.01.013",
                  url = "http://dx.doi.org/10.1016/j.surfcoat.2011.01.013",
                 issn = "0257-8972",
                label = "lattes: 3455204481678421 2 SilvaTravChun:2011:SuMoOf",
             language = "en",
           targetfile = "silva.pdf",
        urlaccessdate = "30 abr. 2024"
}