A series of simulation experiments on corrosion behaviour of carbon steel (A32 Steel) and low alloy steel (16Mn steel) in marine atmosphere (MA), seawater (SW) and seabed sediment (SBS) including rough sea sand, fine sand and seabed mud were carried out indoors for a year of to by means of individually hanging plates (IHP) and electrically connected hanging plates (ECHP). Results showed that the corrosion rates of A3 and 16Mn steel in marine environment were in the order: MA > SW > SBS by the IHP method. MA > SBS > SW by the ECHP method. The corrosion rates of steels in the water/sediment interface were directly proportional to the grain size of the SBS by the ECHP method, but those of steels in the water/sediment interface did not vary with the grain size of SBS by the IHP method. The corrosion rate of low alloy steel was a little higher than that of carbon steel. The corrosion in seabed sediment was mainly determined by the macrogalvanic cell (oxygen concentration difference cell) between steel plates in different sediment and depth.


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    Title :

    Effect of different offshore seabed sediment on steel corrosion


    Additional title:

    Auswirkungen verschiedener Meeresbodensedimente auf die Stahlkorrosion


    Contributors:
    Li, Y. (author) / Li, Yanxu (author) / Hou, B. (author)

    Published in:

    Materials and Corrosion ; 51 , 8 ; 570-573


    Publication date :

    2000


    Size :

    4 Seiten, 3 Bilder, 1 Tabelle, 6 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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