Corrosion Behaviour of CNT-Alumina Coated T22 Boiler Steel in Na2SO4-60% V2O5 Environment at 900°C Temperature
Abstract
In this research work, carbon nanotubes reinforced Al2O3 coated ASME-SA213-T22 boiler tube steel was investigated for high temperature corrosion behaviour in molten salt environment at 900°C temperature. The coatings were deposited using plasma spray technique and NiCr was used as bond coat before applying CNTs-Al2O3 coatings. The thermogravimetric technique was used to establish kinetics of corrosion. X-ray diffraction (XRD) and scanning electron microscopy/energy-dispersive x-ray analysis (SEM/EDAX) techniques were used to analyse the corrosion products. The CNTs reinforced alumina coatings enhance resistance to corrosion significantly.
Keywords
Oxidation, thermal spray, carbon nanotubes, boiler steel, XRD, SEM/EDAX
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PDFDOI: https://doi.org/10.37591/jomcct.v8i3.71
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