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WU Yuanhui1,2, LIU Tianmo1, LUO Suxing2, SUN Cheng3   

  1. 1. School of Material Science and Engineering, Chongqing University, Chongqing 400045, China;
    2. Department of Chemistry, Zunyi Normal College, Zunyi 563002, Guizhou, China; 3. State Key Laboratory for
    Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China
  • Received:2008-03-03 Revised:1900-01-01 Online:2009-01-24 Published:2010-04-15

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Abstract:

Macrocell corrosion of X70 steel in soils was studied by using weight loss and electrochemical impedance spectroscopy (EIS). It was found that the corrosion rate of anode in

clay was 307 times of that in natural condition. When the area ratio of cathode to anode was 15:1, the corrosion rate of the anode in clay was 210 times of that in condition

of the area ratio of cathode to anode being 1∶1. During the test, the corrosion rate of X70 steel in clay, which was buried, was slow, but the anode of the macrocell kept a

rapid corrosion rate.

Key words: X70 steel, macrocell corrosion, soil corrosion, EIS

CLC Number: 

  • TG1724
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