Abstract
This work reports on organosilicon-based coatings deposited by atmospheric plasma processes on aluminium-zinc galvanization layers on steel in order to prevent corrosion. Hexamethyldisiloxane (HMDSO) is introduced as a precursor in an atmospheric pressure dielectric barrier discharge (DBD) plasma. Structure of the coating is evaluated by means of white light interferometry (WLI) and fourier transform infrared spectroscopy (FT-IR) measurements. Anti-corrosion properties are measured by means of electrochemistry testing and salt spray exposure. Admixtures of oxidizing gases in the plasma carrier gas enable faster deposition rate and more corrosion resistant organosilicon coatings.
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