Corrosion resistant behaviour of DLC films

Diamond like carbon (DLC) films are deposited on AISI 304 SS using Plasma Enhanced Chemical Vapour Deposition (PECVD) method and their corrosion behaviour is studied. Corrosion resistance of DLC-coated AISI 304 SS has been found to increase in presence of corrosive solution (3.5% NaCl) as DLC functions physical barrier and restrain it from anodizing. DLC film is deposited using acetylene. Corrosion behaviour of the coated samples is tested by potentio-dynamic method. Surface morphology of the samples before and after corrosion tests is observed using high-resolution optical microscope as well as AFM.