Experimental investigations on the chlorine-induced corrosion of HVOF thermal sprayed Stellite-6 and NiAl coatings with fluidised bed biomass/anthracite combustion systems
نویسندگان
چکیده
Abstract Stellite-6 (Co-based) and NiAl coatings (Ni-based) were deposited via HVOF spraying onto 304 stainless steels tested in a 20 kWth biomass fired bubbling fluidised bed (BFB) combustor for 20 h an industrial scale anthracite CFB boiler 1630 h. showed excellent corrosion resistance both combustion systems because of the formation outermost Cr2O3 layer spinel CoCr2O4 beneath, whereas coatings’ anti-corrosion performance was significantly depleted due to chlorine attack, resultant Al2O3 at coating/substrate interface finally led coating spallation systems.
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ژورنال
عنوان ژورنال: Fuel
سال: 2021
ISSN: ['0016-2361', '1873-7153']
DOI: https://doi.org/10.1016/j.fuel.2020.119607