Temperature Water by In-situ Electrochemical Techniques
Investigation of the Effect of Dissolved Hydrogen on the Oxide Film on Alloy 600 in HighTemperature Water by In-situ Electrochemical Techniques
著者:
Qunjia Peng Yoichi Takeda Jiro Kuniya Tetsuo Shoji
発刊日:
公開日:
Alloy 600Dissolved HydrogenElectronic PropertiesHigh Temperature WaterOxide Film
概要
In order to improve the understanding of the effect of dissolved hydrogen (DH) on the property of oxide film in high temperature water, the electronic properties of the oxide film on Alloy 600 in hi gh temperature water under various levels of DH were studied by contact electric resistance (CER) technique and electrochemical impedance spectroscopy. The results showed that the oxide film exhibit ed n-type semiconductivity. The film resistance, charge transfer resistance and ionic defect transport resistance were all decreased by higher on DH, suggesting that increasing DH could increase the defectiveness of the film as well as enhance the ionic defect transport in the film. The results suggest that hydrogen could affect the oxidation kinetics as well as the stability of the oxide film.
