Deposition of Organosilicon-Based Anticorrosion Layers on Galvanized Steel by Atmospheric Pressure Dielectric Barrier Discharge Plasma

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.

Different Ways to Plasma‐Polymerize HMDSO in DBD Configuration at Atmospheric Pressure for Corrosion Protection

“…While the ability of ppHMDSO deposited by an atmospheric pressure DBD to protect galvanized steel against corrosion has already been reported,20 this paper analyzes HMDSO plasma polymers in more detail. The chemical structure was characterized by means of FTIR (in attenuated reflection mode) and X‐ray photoelectron spectroscopy (XPS).…”

Self-healing coatings in anti-corrosion applications

“…Self-healing hybrid oxide coatings are produced using the sol-gel technique [78][79][80][81][82], less often by electrodeposition [83], or using plasma techniques [84]. Alcoholates or salts of various metals and silicon are the substrate.…”

Insights in the Architecture of Silicon‐Based Plasma Polymers Using Partial Network Ethanolysis Combined with Electrospray Tandem Mass Spectrometry

“…Most polymers resulting from plasma polymerization exhibit different structures than those fabricated by conventional polymerization methods, and hence offer specific properties. For example, organosilicon coatings formed from plasma polymerization of hexamethyldisiloxane (HMDSO) are very attractive for industrial applications due to their good barrier properties,1–5 and also because they can be deposited by atmospheric pressure plasma processes. In addition, structures of these complex species can change according to the plasma process parameters, and, since chemical structure of coatings has a great influence on their functional properties, characterization of their molecular structure is a critical issue.…”