Influence of oxidation parameters on the protective properties of molybdenum conversion coatings on aluminum alloy AMg3
https://doi.org/10.61852/2949-3412-2026-4-2-120-129
Abstract
The presence of corrosive agents, such as chlorides, in the atmosphere or water can lead to active pitting corrosion of magnesium-containing aluminum alloys, which include AMg3 alloy. One of the ways to protect them are coatings obtained by chemical oxidation in molybdenum compounds. To increase the anticorrosive properties of such coatings, the introduction of modifying additives into the converting composition and subsequent filling of coatings in a solution of a corrosion inhibitor is used. In this work, we studied the molybdenum coatings modified with combinations of additives: sodium silicate and sodium tetraborate, magnesium nitrate and sodium carbonate. It has been shown that the first combination of additives makes it possible to obtain more stable coatings in terms of protective properties when the temperature of the converting compound changes, the oxidation time varies, and multiple oxidation in a solution.
About the Authors
A. S. Konovalov
Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences
Russian Federation
Russian Federation
31-4, Leninsky prospect, 119071, Moscow
Yu. A. Kuzenkov
Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences
Russian Federation
Russian Federation
31-4, Leninsky prospect, 119071, Moscow
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Review
For citations:
Konovalov A.S., Kuzenkov Yu.A. Influence of oxidation parameters on the protective properties of molybdenum conversion coatings on aluminum alloy AMg3. Title in english. 2026;(2):120-129. (In Russ.) https://doi.org/10.61852/2949-3412-2026-4-2-120-129
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