The effect of noble metal chemical addition on the electrochemical corrosion potential (ECP) behavior and flow-assisted corrosion of carbon steel in 288 °C water under various water chemistry conditions was evaluated. It was shown that the noble metal on the surface shifted the ECP to the noble direction in reducing environments at low oxygen concentrations by catalyzing the hydrogen/oxygen water reduction reaction and hence decreased the flow-assisted corrosion rate (or erosion corrosion rate) of carbon steel.

Subject
Noble potential, Water, Boiling water reactors, Corrosion rate, Noble metals, Water chemistry, Oxide surfaces, Weight loss, Oxygen, Carbon steel, Electrodes, Electrode potential, Hydrogen
Keywords:
noble metal chemical addition, BWR, high temperature water, carbon steel, flow-assisted corrosion, ECP
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1999
Association for Materials Protection and Performance (AMPP)
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