Abstract
We study the corrosion of alloys based on titanium, aluminum, zirconium, and iron in solutions of sodium chloride. The corrosion rate of aluminum significantly increases in contact with zirconium, titanium, and stainless steel. It is shown that the kinetics of aluminum corrosion is controlled by the cathodic reaction of reduction of molecular oxygen. It is also demonstrated that the corrosion rate of aluminum outside the contact zone is equal to the rate observed in contact with oxidized zirconium or titanium. The protective properties of oxide coatings on titanium and zirconium obtained by the method of microarc oxidation and high-temperature oxidation are investigated by the method of impedance spectroscopy.
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