Corrosion of mild steel in different granularity seabed sediment saturated with seawater
✍ Scribed by D. Jizhou; H. Baorong; H. Yanliang; S. Huyuan; L. Yan; M. Shide
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- German
- Weight
- 131 KB
- Volume
- 53
- Category
- Article
- ISSN
- 0947-5117
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✦ Synopsis
In order to investigate the corrosion of pipeline materials in Seabed Sediment (SBS) environment, weight-loss and electrochemical measurements in saturated sand and mud cells with seawater were performed for a simulation. The used electrochemical measurements included linear polarization resistance (LPR) and potentiodynamic scanning measurement. It was showed that the corrosion rate of mild steel in the present condition was lower than the corrosion rate of other marine environment corrosion zones of it; that the granularity of SBS could affect the corrosion behavior greatly; that with increasing grain size of SBS, the corrosion rate increased. Integrated over the results of the weight loss and polarization curves, the oxygen diffusion (oxygen as a depolarizant agent) mechanism was proposed and discussed.
Um die Korrosion von Pipelinewerkstoffen in Meeresbodensedimentumgebung zu untersuchen, wurden Gewichtsverlustmessungen und elektrochemische Messungen in mit Meerwasser gesa Èttigten Sand-und Schlammzellen durchgefu Èhrt. Die verwendeten elektrochemischen Messungen beinhalteten lineare Polarisationswiderstandsmessungen (LPR) und potentiodynamische Abtastmessungen. Es konnte gezeigt werden, dass die Korrosionsgeschwindigkeit von unlegiertem Stahl unter den vorliegenden Bedingungen niedriger war als die Korrosionsgeschwindigkeit in anderen marinen Umgebungen,