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Electrochemical corrosion behavior of Fe 3 Al in H 2 S-CO 2 -Cl − environment
- Source :
- Materials Chemistry and Physics. 198:7-15
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- The electrochemical impedance spectroscopy and Electrochemical Noise were employed to investigate the electrochemical behavior of Fe3Al in H2S-CO2-Cl− environment under normal pressures and temperatures. The results indicate that Fe3Al has excellent self-passivating repair ability in H2S-CO2-Cl− environment. Meanwhile, by extending corrosion time, the type of corrosion changes from pitting corrosion to intergranular corrosion and finally to denudation. The flocculent and porous corrosion products are formed on the surface of Fe3Al. After the corrosion product falling off, fracturing morphology is observed and the corrosion products mainly include FeS, FeCO3, Al(OH)3, Al2O3, Cr2O3, etc.
- Subjects :
- Materials science
020209 energy
Metallurgy
02 engineering and technology
Intergranular corrosion
021001 nanoscience & nanotechnology
Condensed Matter Physics
Electrochemistry
Corrosion
Dielectric spectroscopy
Electrochemical noise
0202 electrical engineering, electronic engineering, information engineering
Pitting corrosion
General Materials Science
0210 nano-technology
Porosity
Anaerobic corrosion
Subjects
Details
- ISSN :
- 02540584
- Volume :
- 198
- Database :
- OpenAIRE
- Journal :
- Materials Chemistry and Physics
- Accession number :
- edsair.doi...........db96509e20e1295fcefed9a622a2399e