title: Improvement of diamond-like carbon electrochemical corrosion resistance by addition of nanocrystalline diamond.
abstract: Nanocrystalline diamond (NCD) particles were incorporated into diamond-like carbon (DLC) films in order to investigate NCD-DLC electrochemical corrosion resistance. The films were grown over 304 stainless steel using plasma-enhanced chemical vapor deposition. NCD particles were incorporated into DLC during the deposition process. The investigation of NCD-DLC electrochemical corrosion behavior was performed using potentiodynamic polarization against NaCl. NCD-DLC films presented more negative corrosion potential and lower anodic and cathodic current densities. The electrochemical analysis indicated that NCD-DLC films present superior impedance and polarization resistance compared to the pure DLC, which indicate that they are promising corrosion protective coatings in aggressive solutions.
authors.affiliation: Instituto Nacional de Pesquisas Espaciais, São José dos Campos/SP, 12227-010, Brazil. fernanda@las.inpe.br
authors.forename: F R
authors.initials: FR
authors.lastname: Marciano
authors.forename: E C
authors.initials: EC
authors.lastname: Almeida
authors.forename: L F
authors.initials: LF
authors.lastname: Bonetti
authors.forename: E J
authors.initials: EJ
authors.lastname: Corat
authors.forename: V J
authors.initials: VJ
authors.lastname: Trava-Airoldi