The corrosion kinetic parameters EĪ suggest that surface processes are involved in the dissolution kinetics, especially in the pH range 3–6. Tafel slopes bĬ were characteristic for hydrogen evolution on aluminium covered by an oxide film. Aluminium exhibits passive behaviour in citric acid solutions of pH 4–8. The OCP reached a steady-state value very slowly, probably due to the slow rate of detachment of surface complexes into the solution. The electrochemical and surface properties of aluminium in 0.05 M citric acid solutions of pH 2–8 were studied by means of open circuit potential (OCP), potentiodynamic polarization and potentiostatic current–time transient measurements.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |