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THERMALLY SPRAYED COATINGS FOR CORROSION PROTECTION AT HIGH TEMPERATURES

1 DUDEK Agata
Co-authors:
PIOTROWSKA K. MALURDY T. SZYMAŃSKI K. MOSKAL G.
Institution:
1 Silesian University of Technology, Department of Metallurgy and Recycling, Krasińskiego 8 Str., 40-019, Katowice, Poland!#!2Silesian University of Technology, Materials Innovation Laboratory, Krasińskiego 8 Str., 40-019, Katowice, Poland!#!3Częstochowa University of Technology, Department of Materials Engineering, 42-200 Częstochowa, Armii Krajowej Av. 19, Poland
Conference:
35th International Conference on Metallurgy and Materials, OREA Congress Hotel Brno, Czech Republic, EU, May 5 - 7, 2026
Proceedings:
Proceedings 35th International Conference on Metallurgy and Materials
ISBN:
978-80-88365-32-7
ISSN:
2694-9296
Licence:
CC BY 4.0
Metrics:
1 view
Abstract

This paper examined the suitability of thermally sprayed coatings for high-temperature corrosion protection. The coatings' resistance to abrasive wear and erosion, which, along with corrosion, are inherently damaging factors in power boilers, particularly fluidized bed boilers, was also determined. The theoretical section presents the need to modernize power generation due to the increasing requirements for operation in supercritical conditions and the consequent accelerated wear of power unit components. The system's operational scheme and the mechanisms that damage components, primarily the power boiler, during the energy production process are described. The broad application possibilities of protective coatings and their manufacturing processes are then discussed. In the research section, samples of thermally sprayed coatings were prepared by arc spraying onto S235 structural steel. Erosive wear tests were conducted at 30° and 90° angles, and abrasive wear tests were also conducted. High-temperature corrosion was conducted on ashes from biomedical waste incineration and power plant ashes under simulated power-boiler operating conditions. The results were analyzed using a stereomicroscope and a scanning electron microscope (SEM).

Keywords: heating elements, SiC, recycling, powders

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