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    Volume 6, Issue 1 (April 2017)

    Corrosion Behaviors of 10CrNiCu High Strength Steel in Simulated Deep Sea Environment of High Hydrostatic Pressure and Low Dissolved Oxygen

    (Received 7 December 2016; accepted 27 January 2017)

    Published Online: 28 April 2017

    CODEN: MPCACD

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    Abstract

    This paper investigated 10CrNiCu high strength steel in a simulated deep sea environment of high hydrostatic pressure (HP) and low dissolved oxygen (DO) using microstructures, rust compositions, and electrochemical measurements. The results show that primary form of steel corrosion in this simulated high HP and low DO environment is pitting. Using cyclic voltammetry (CV) and laser Raman spectrum, it is found that HP and DO all accelerate corrosion rates, but they affect corrosion processes in different ways. HP simultaneously accelerates anodic and cathodic reaction rates, whereas DO mainly accelerate cathodic reaction rates. In the environment of high HP and low DO, oxygen concentration cell corrosion has a tendency to form on steel surface, which can accelerate pitting.

    Author Information:

    Han, W.
    Research Div. of Anti-corrosion Coating and Thermal Insulation Structure, The Key Laboratory of Tubular Goods Engineering, CNPC, Tianjin,

    Anti-corrosion Insulation Joint Laboratory of CNPC Research Inst. of Engineering Technology & Harbin Engineering Univ., Tianjin,

    CNPC Research Inst. of Engineering Technology, Tianjin,

    Tong, H.
    CNPC Research Inst. of Engineering Technology, Tianjin,

    Research Div. of Anti-corrosion Coating and Thermal Insulation Structure, The Key Laboratory of Tubular Goods Engineering, CNPC, Tianjin,

    Anti-corrosion Insulation Joint Laboratory of CNPC Research Inst. of Engineering Technology & Harbin Engineering Univ., Tianjin,

    Wei, S.
    Academy of Armored Forces Engineering, Beijing,

    Xu, B.
    Academy of Armored Forces Engineering, Beijing,

    Zhang, Y.
    Research Div. of Anti-corrosion Coating and Thermal Insulation Structure, The Key Laboratory of Tubular Goods Engineering, CNPC, Tianjin,

    Anti-corrosion Insulation Joint Laboratory of CNPC Research Inst. of Engineering Technology & Harbin Engineering Univ., Tianjin,

    CNPC Research Inst. of Engineering Technology, Tianjin,

    Lin, Z.
    Research Div. of Anti-corrosion Coating and Thermal Insulation Structure, The Key Laboratory of Tubular Goods Engineering, CNPC, Tianjin,

    Anti-corrosion Insulation Joint Laboratory of CNPC Research Inst. of Engineering Technology & Harbin Engineering Univ., Tianjin,

    CNPC Research Inst. of Engineering Technology, Tianjin,

    Stock #: MPC20160122

    ISSN:2165-3992

    DOI: 10.1520/MPC20160122

    Author
    Title Corrosion Behaviors of 10CrNiCu High Strength Steel in Simulated Deep Sea Environment of High Hydrostatic Pressure and Low Dissolved Oxygen
    Symposium ,
    Committee G01