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高等学校化学研究 ›› 2011, Vol. 27 ›› Issue (4): 697-702.

• Articles • 上一篇    下一篇

Investigation on Semi-conductive Properties of Hot Growth Film on 316L Austenitic Stainless Steel

LI Dang-guo, CHEN Da-rong*, WANG Jia-dao and CHEN Hao-sheng   

  1. State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P. R. China
  • 收稿日期:2010-06-21 修回日期:2010-09-19 出版日期:2011-07-25 发布日期:2011-06-29
  • 通讯作者: CHEN Da-rong E-mail:chendr@mail.tsinghua.edu.cn
  • 基金资助:

    Supported by the National Basic Research Program of China(No.2007CB707702).

Investigation on Semi-conductive Properties of Hot Growth Film on 316L Austenitic Stainless Steel

LI Dang-guo, CHEN Da-rong*, WANG Jia-dao and CHEN Hao-sheng   

  1. State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P. R. China
  • Received:2010-06-21 Revised:2010-09-19 Online:2011-07-25 Published:2011-06-29
  • Contact: CHEN Da-rong E-mail:chendr@mail.tsinghua.edu.cn
  • Supported by:

    Supported by the National Basic Research Program of China(No.2007CB707702).

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摘要： The semi-conductive performances of hot growth film on 316L stainless steel were studied by means of electrochemical impedance spectroscopy(EIS) and Mott-Schottky analysis. The chemical compositions of the hot growth films were detected by X-ray photoelectron spectroscopy(XPS). The results show that the transfer resistance and film resistance increase with increasing temperature to 400 °C, then they decrease sharply with further continuously increasing temperature. Formation time plays an important role in determining the electron properties of the hot growth film, when formation time reaches to 1 d, the transfer resistance and film resistance reach to the maximum value. Hot growth film has better anticorrosion behaviour in bicarbonate/carbonate solution containing chloride ions or sulfide ions. Mott-Schottky analysis reveals that hot growth film has n-p type semi-conductive property. XPS results show that the hot growth film is mainly composed of the inner chromium oxide and the outer iron oxide.

关键词: Stainless steel, Electrochemical impedance spectroscopy(EIS), Mott-Schottky, X-Ray photoelectron spectroscopy(XPS), Passive film

Abstract: The semi-conductive performances of hot growth film on 316L stainless steel were studied by means of electrochemical impedance spectroscopy(EIS) and Mott-Schottky analysis. The chemical compositions of the hot growth films were detected by X-ray photoelectron spectroscopy(XPS). The results show that the transfer resistance and film resistance increase with increasing temperature to 400 °C, then they decrease sharply with further continuously increasing temperature. Formation time plays an important role in determining the electron properties of the hot growth film, when formation time reaches to 1 d, the transfer resistance and film resistance reach to the maximum value. Hot growth film has better anticorrosion behaviour in bicarbonate/carbonate solution containing chloride ions or sulfide ions. Mott-Schottky analysis reveals that hot growth film has n-p type semi-conductive property. XPS results show that the hot growth film is mainly composed of the inner chromium oxide and the outer iron oxide.

Key words: Stainless steel, Electrochemical impedance spectroscopy(EIS), Mott-Schottky, X-Ray photoelectron spectroscopy(XPS), Passive film