| Abstract Scope |
The methods for producing alloyed chromium coatings and the search for optimal powder FA charges, allowing the formation of protective coatings on composite materials, are considered. Under FA conditions, it is possible to obtain coatings of various chemical compositions by varying the amount and content of alloying additives. Among the coatings under consideration, chromium-aluminosilicate coatings have the best heat resistance. When tested in a 30% aqueous solution of nitric acid, good resistance is shown by coatings alloyed with titanium and silicon, having the following weight loss coefficients, respectively: 27 and 31 g / m2. Metallographic analysis shows that the protective coatings in all samples were uniformly corroded to a shallow depth, therefore, for work in a 30% hydrochloric acid solution, it is advisable to use a coating alloyed with silicon, which, in addition to good corrosion resistance, has wear resistance. The microstructure and phase composition were investigated. |