Study of the Corrosion Mechanism of Iron-Based Amorphous Composite Coating with Alumina in Sulfate-Reducing Bacteria Solution

In this work, a composite coating composed of iron-based amorphous material and alumina mixed with 13 wt.% titanium oxide (AT13) ceramic was successfully fabricated by High Velocity Air-fuel Flame Spray (HVAF). The corrosion process the in Sulfate-Reducing Bacteria (SRB) solution for 31 d investigated Electrochemical Impedance Spectroscopy (EIS). morphologies products were tested X-ray photoelectron spectroscopy. mechanism can be divided into two stages: microbial adhesion biofilm failure. on surface improved formation biofilm, which resistance. On other hand, SRB metabolic accelerated products, resulted failure thus re-exposed solution.