Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8024560 | Surface and Coatings Technology | 2018 | 36 Pages |
Abstract
Super anti-corrosive copper/diamond-like carbon (Cu/DLC) composite films are applied on mild steel utilizing magnetron sputtering in a mixed atmosphere of Ar and CH4. Mechanical, contact angle, and corrosion performance of the resulting Cu/DLC thin films are probed and discussed in terms of Ar/CH4 and Cu/C ratios. Overall, Cu/C ratio has augmented by Ar/CH4 ratio. Raman spectra of films revealed typical features of G and D bands indicating formation of DLC phase. The Cu/DLC thin films with higher Cu content exhibited a higher degree of sp2 carbon clustering, but lower diamond-like sp3 bonding. Internal stress values of Cu/DLC thin films decreased with increasing Cu/C ratio. Addition of a few amount of Cu to DLC resulted in a rise in plastic hardness and H3/E2 ratio of Cu/DLC composite thin films, but optimum value was observed for composite films having an intermediate Cu concentration. The contact angle of iron substrate increased when coated with Cu/DLC thin films, but Cu content of films played a minor role. The Cu/DLC thin films formed via magnetron sputtering revealed super anti-corrosion performance, the term which is defined, conceptualized, and quantified in the current study.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Sara Khamseh, Eiman Alibakhshi, Mohammad Mahdavian, Mohammad Reza Saeb, Henri Vahabi, Ninel Kokanyan, Pascal Laheurte,