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Abstract
In this work results on the influence of hydrogen on passivity and corrosion resistance of 2205 duplex stainless steel (DSS) welded joints are described. The results were discussed by taking into account three different areas on the welded joint: weld metal (WM), heat-affected zone (HAZ) and parent metal. The corrosion resistance was qualified with the polarization curves registered in a synthetic sea water. The conclusion is that, hydrogen may seriously deteriorate the passive film stability and corrosion resistance to pitting of 2205 DSS welded joints. The presence of hydrogen in passive films increases corrosion current density and decreases the potential of the film breakdown. It was also found that degree of susceptibility to hydrogen degradation was dependent on the hydrogen charging conditions. WM region has been revealed as the most sensitive to hydrogen action.
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- Category:
- Conference activity
- Type:
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Title of issue:
- IOP Conference Series: Materials Science and Engineering. strony 1 - 8
- Language:
- English
- Publication year:
- 2012
- Bibliographic description:
- Michalska J., Łabanowski J., Ćwiek J.: Hydrogen effects in duplex stainless steel welded joints - electrochemical studies// IOP Conference Series: Materials Science and Engineering./ : IOP Publishing, 2012, s.1-8
- Verified by:
- Gdańsk University of Technology
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