Corrosion Resistance of an Aluminum Alloy Coated with Polysilazane Derived Ceramics

摘要

Aluminum plates were dip coated in a poly N methylsilazane, solution. Heating process at 400 C transformed the inorganic polymer into coatings that exhibited good corrosion resistance characteristics in a marine environment relative to the bare metal as measured and interpreted by electrochemical methods. The corrosion rate was inhibited by almost one order of magnitude. No microscopic degradation of the coatings was observed after 21 days of measurement, which confirms the stability of the coatings as determined by the electrochemical technique.