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On the localized corrosion of AA5083 in a simulated dynamic seawater/air interface—Part 3: effects of sensitization.
- Source :
-
Corrosion Science . Mar2024, Vol. 228, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- The effect of a 150 °C/144 h sensitization treatment on the localized corrosion of AA5083-O in a simulated dynamic seawater/air interface zone was investigated using electrochemical measurements and advanced characterization techniques. Sensitization resulted in an increase in the amount and the size of Al-Fe-Mn intermetallic particles (IMPs) in AA5083-O, and promoted the precipitation of β-Al 3 Mg 2 at grain boundaries in the AA5083-O. Severe pitting corrosion occurred on sensitized AA5083-O in the seawater/air interface zone, an uneven and loose surface film appeared in the presence of β-Al 3 Mg 2. • The effects of sensitization on localized corrosion of AA5083 in a dynamic seawater/air interface were investigated. • Sensitization increased the number and the size of Al-Fe-Mn intermetallic particles (IMPs). • Sensitization promoted β-Al 3 Mg 2 precipitation at the grain boundaries. • A loose and uneven surface film was induced on the sensitized AA5083-O. • Severe pitting corrosion occurred on sensitized AA5083-O exposed to the seawater/air interface zone. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PITTING corrosion
*CRYSTAL grain boundaries
*ARTIFICIAL seawater
*SEAWATER
Subjects
Details
- Language :
- English
- ISSN :
- 0010938X
- Volume :
- 228
- Database :
- Academic Search Index
- Journal :
- Corrosion Science
- Publication Type :
- Academic Journal
- Accession number :
- 174975656
- Full Text :
- https://doi.org/10.1016/j.corsci.2024.111821