Development of CNT reinforced Al2O3-TiO2 coatings for boiler tubes to improve hot corrosion resistance
Original scientific paper
DOI:
https://doi.org/10.5599/jese.1291Keywords:
Reinforced coatings, composites, ceramic matrix, carbon nanotubes, plasma spraying, T12 steel corrosionAbstract
This study examines the hot corrosion behaviour of plasma-coated T12 steel for 10 cycles of 100 h each in an industrial boiler. The coating contains CNT (carbon nanotubes) reinforced alumina-titania powders. The substrates were exposed to the boiler at 750 °C. A thermogravimetric examination was conducted to evaluate the kinetics of corrosion. Corroded samples were examined with scanning electron microscopy and x-ray diffraction analysis after the end of the corrosion cycle. This research study concludes that CNT-reinforced coatings provide better corrosion resistance than conventional alumina coatings in the boiler environment.
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