ИСТИНА

Aluminum alloys are very significant constructional materials. Improvement of their corrosion resistance can reduce operating costs and expand field of their application. Great resources are wasted for control of corrosion and its consequences. These expenses are hard to analyze; however, several experts evaluate them as 2–4% of gross domestic product [1]. To solve this problem, we decided to use passive protection – modification by anodizing followed by chemical hydrophobization. This method allows improving barrier properties of alloys and makes their surface superhydrophobic. It inhibits corrosion on the contact with an electrolyte due to synergetic action of various mechanisms [2] including decrease of the area contacting with aggressive environment. To evaluate the resulting anticorrosion properties, electrochemical study was carried out. The impedance spectra were recorded and polarization curves were obtained. Dynamics of wetting angles of the surfaces of superhydrophobic samples was also studied.