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.
Effect of different offshore seabed sediment on steel corrosion
Auswirkungen verschiedener Meeresbodensedimente auf die Stahlkorrosion
Materials and Corrosion ; 51 , 8 ; 570-573
2000
4 Seiten, 3 Bilder, 1 Tabelle, 6 Quellen
Aufsatz (Zeitschrift)
Englisch
kohlenstoffreicher Stahl , unlegierter Stahl , niedriglegierter Stahl , Simulationsversuch , Korrosionsprüfung , Off-Shore-Anlage , Meerestechnik , Unterwasserumgebung , Meeresatmosphäre , Meeresboden , Sediment , Sand , Schlamm , Korngröße , Korrosionsmechanismus , Korrosionsgeschwindigkeit , Meerwasser , elektrochemische Korrosion , Stromkreis
Seabed Morphology and Sediment Dynamics
HENRY – Bundesanstalt für Wasserbau (BAW) | 2008
|Seabed Scour Assessment for Offshore Windfarm
HENRY – Bundesanstalt für Wasserbau (BAW) | 2006
|