Journal
SURFACE & COATINGS TECHNOLOGY
Volume 204, Issue 20, Pages 3125-3130Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2010.02.057
Keywords
DLC thin film; Ni doping; DC magnetron sputtering; Corrosion; NaCl electrolyte
Funding
- Environment & Water Industry Development Council (EWI), Singapore [EWI-0601-IRIS-035-00]
- Nanyang Technological University (NTU), Singapore
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Nickel doped diamond-like carbon (DLC:Ni) thin films were fabricated on conductive p-Si (100) substrates with DC magnetron sputtering deposition by varying DC power applied to a Ni target. The bonding structure, surface morphology, scratch resistance and corrosion resistance of the DLC:Ni films were studied using X-ray photoelectron spectroscopy (XPS), micro-Raman spectroscopy, atomic force microscopy (AFM), micro-scratch test, potentiodynamic polarization test and open circuit potential measurement. The results indicated that the corrosion resistance of the DLC:Ni films in a 0.6 M NaCl solution decreased with increased Ni content in the films though the films showed good passivation behavior in the NaCl solution. (C) 2010 Elsevier B.V. All rights reserved.
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