The effect of noble metal treatment on the electrochemical corrosion potential (ECP) behavior and corrosion of carbon steel (CS) in 288°C water (H2O) under various water chemistry conditions was evaluated. It was shown that the presence of noble metal on the CS surface shifted the ECP to the noble direction in reducing environments at low-oxygen (O2) concentrations by catalyzing the hydrogen (H2)/O2 water reduction reaction, thus decreasing the corrosion rate of CS.

Subject
Water, Boiling water reactors, Hydrogen concentration, Corrosion rate, Noble metals, Water chemistry, Oxide surfaces, Weight loss, Oxygen, Risk reduction, Electrodes, Electrode potential, Hydrogen
Keywords:
boiling water reactor, carbon steel, electrochemical corrosion potential, high-temperature water, noble metal chemical addition, weight loss
NACE International
2002
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