Cathodic protection modelling of a propeller shaft
| Autor: | Tiziano Bellezze, Romeo Fratesi, Tommaso Pastore, Sergio Lorenzi |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Galvanic anode Settore ING-IND/22 - Scienza e Tecnologia dei Materiali 020209 energy General Chemical Engineering Materials Science chemistry.chemical_element 02 engineering and technology Oxygen Stainless steel Cathodic protection Corrosion law.invention law Polarization 0202 electrical engineering electronic engineering information engineering General Materials Science Pitting corrosion Polarization (electrochemistry) Modelling studies Chemical Engineering Chemistry Metallurgy General Chemistry Mechanics Finite element method chemistry Drive shaft Seawater |
| Zdroj: | Corrosion Science. 108:36-46 |
| ISSN: | 0010-938X |
| DOI: | 10.1016/j.corsci.2016.02.035 |
| Popis: | Current and potential distributions on a stainless steel propeller shaft protected by galvanic anodes were investigated by means of Finite Element Method (FEM) modelling. The effect of seawater flow and shaft rotation was evaluated. The results of simulations are compared with experimental measurements performed on steady shaft in natural seawater. Modest polarization can be noticed in all operating conditions, not sufficient for preventing biofilm action on localized corrosion initiation. Only in stagnant conditions, without any water renewal, the consumption of oxygen leads to an appreciable potential decreasing to match the limits of normal protection indicated in the European standards. |
| Databáze: | OpenAIRE |
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