The corrosion behavior of Fe, Cr, Ni ,and two commercial alloys in molten chloride/sulfate mixture and chloride mixture was evaluated by potentiodynamic polarization and free corrosion potential measurements at 350°C and 560°C Cr is effective to suppress corrosion in molten chloride/sulfate mixture, whereas Ni is effective for molten chloride. Mo works to suppress corrosion in nobler potential regime. Both O2 and H2O are considered to act as an oxidant in chloride/sulfate mixture as in chloride salt.

Subject
Noble potential, Anode potential, Corrosion resistant alloys, Salts, Metal surfaces, Nickel based alloys, Tubes, Molybdenum alloys, Anodic polarization curves, Free corrosion potential, Mixtures, Anodic current, Chlorides
Keywords:
waste incineration, hot corrosion, chloride, sulfate, superheate tube
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1997
Association for Materials Protection and Performance (AMPP)
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