Conditions and Ways to Protect Equipment with Resistant Anti-Corrosion Coatings Obtained by Chemical Oxidation of Aluminium
The article analyzes the main methods of protecting aluminium elements of technological equipment from corrosion and describes a method for producing protective oxide films on the surface of aluminum and its alloys by a chemical method. Particular attention is paid to coatings obtained by the chemical oxidation of aluminium in solutions not containing chromic anhydride. The article thoroughly studies the conditions for the chemical oxidation of aluminium and its alloys in aqueous solutions not containing chromic anhydride and analyzes the characteristics and features of using chemical solutions of various compositions. The solution and conditions of the chemical oxidation process have been chosen to produce oxide films that have high performance and have no adverse effects on the environment. It has been established that the method of chemical oxidation of aluminium in solutions that do not contain chromium anhydride is effective and can find wide technological application in the largest industries.