Study of corrosion resistance of cold sprayed Al + B4C composite coatings

• Published in: Metallurgist (New York) Vol. 68; no. 7; pp. 1011 - 1023
• Main Authors: Kosarev, V. F., Klinkov, S. V., Kulevich, V. P., Shikalov, V. S., Korneev, A. E., Korneev, A. A., Bukharin, I. I.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-11-2024; Springer Nature B.V
• Subjects: Aluminum oxide; Austenitic stainless steels; Boron carbide; Characterization and Evaluation of Materials; Chemical composition; Chemistry and Materials Science; Coatings; Cold spraying; Cold working; Corrosion effects; Corrosion resistance; Corrosion resistant steels; Corrosion tests; Heat treatment; Low temperature resistance; Materials Science; Metallic Materials; Phase composition; Powder spraying; Boric acid; Cold spraying; Corrosion; Composite coating; 620.22; Nickel; Coating; Boron carbide
• ISSN: 0026-0894; 1573-8892
• DOI: 10.1007/s11015-024-01810-6

The work presents the results of the corrosion resistance study of composite coatings obtained by cold spraying of the aluminum and boron carbide powder mixture on the surface of 08Cr18Ni10Ti austenitic steel. Their chemical and phase compositions, macro- and microstructure, as well as the effect of subsequent heat treatment are analyzed. It is shown that the corrosion of coatings in a 2% boric acid solution at 60 °C is accompanied by an increase in the sample mass and the formation of an aluminum oxide layer. The minimum mass change was observed in case of the coating heat treated at 400 °C, while an increase in heat treatment temperature leads to the intensification of corrosion destruction.