Electrochemical corrosion rate probes have been constructed and tested along with mass loss coupons in an air plus water vapor and a N2/O2/CO2 plus water vapor environment. Temperatures ranged from 200° to 700°C. Results show that electrochemical corrosion rates for ash-covered mild steel are a function of time, temperature and process environment. Correlation between the electrochemical and mass loss corrosion rates was poor.

Subject
Water, Electrochemical corrosion, Sensors, Materials, Corrosion rate, Mass loss, Vapors, Corrosion scales, Ash, Corrosion probes, Coal, Linear polarization resistance, Samples
Keywords:
corrosion, coal combustion, gaseous, electrochemical noise, harmonic distortion, linear polarization resistance, high temperature
Government work published by the Association for Materials Protection and Performance (AMPP) with permission of the author(s). Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2004
GOV
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