Effect of high-temperature corrosion on the gas-abrasive resistance of electric-arc coatings

We study the high-temperature gas-abrasive wear resistance of electric-arc coatings sprayed from powder wires. It is shown that the wear resistance of these coatings increases with temperature. This is explained by the effect of strengthening of lamellae in the coating, segregation of the dispersed...

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Bibliographic Details
Published in:Materials science (New York, N.Y.) N.Y.), 2009-07, Vol.45 (4), p.481-489
Main Authors: Student, M. M., Pokhmurs’ka, H. V., Hvozdets’kyi, V. V., Holovchuk, M. Ya, Romaniv, M. S.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coatings
Corrosion prevention
Heat exchangers
Materials Science
Protective coatings
Restoration
Segregations
Solid Mechanics
Structural Materials
Tubes
Wear resistance
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Summary:We study the high-temperature gas-abrasive wear resistance of electric-arc coatings sprayed from powder wires. It is shown that the wear resistance of these coatings increases with temperature. This is explained by the effect of strengthening of lamellae in the coating, segregation of the dispersed phases, and the appearance of aluminum and chromium oxides (characterized by high shock resistance) both on the surface and between the lamellae. These coatings can be used for the restoration and protection of the heat-exchange surfaces of boilers of thermal power plants, including the large-size waterwall tubes and the tubes of economizers.
ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-010-9205-4