Abstract
The purpose of this study is to improve the corrosion resistance and to examine the electrochemical behavior of Diamond-like carbon (DLC) films. DLC films were prepared by the ionization deposition method with different film thickness, in which benzene (C6H6) was used as precursor gas. The film thickness was changed from 106 to 637 nm and the bias voltage was applied at −1.0 and −2.0 kV. The electrochemical corrosion tests were performed by potentiodynamic anodic polarization, potentiostatic polarization and galvanostatic polarization techniques in 3 mass%NaCl aqueous solutions open to the air at 333 K. The corroded surfaces of DLC/Al after the galvanostatic polarization measurements were observed by a scanning electron microscope. We also examined the adhesion of films using a tensile pull-off tester. In this study, the influence of the preparation conditions on the corrosion resistance of DLC/Al are reported from a study of electrochemical properties. It is found that the corrosion resistance of DLC/Al samples is superior with decreasing film thickness. The corrosion resistance of DLC prepared at Vb=−2.0 kV is more superior to that at Vb=−1.0 kV with similar thickness. The adhesive strength of films is higher for the thinner films and this tendency correlated with the corrosion resistance by electrochemical tests.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
