Quasicrystals: Proceedings of the MRS 1998 Fall Meeting
We report the electrochemical potentials at which localized pitting and repassivation occur on icosahedral Al-Cu-Fe, and on a series of related alloys and elemental metals. The electrochemistry occurs in a buffered NaCI solution, pH 8.4. Under these conditions, pitting and repassivation appear to be controlled mainly by the chemical composition of the alloy, although the quasicrystalline phase displays an anomalous resistance to repassivation. Corrosion of this phase proceeds by dissolution of Al and Fe, leaving behind pits which are Cu-enriched.
Materials Research Society
Spurr, Nicholas A.; Pinhero, Patrick J.; Sordelet, Daniel J.; Hebert, Kurt R.; and Thiel, Patricia A., "Electrochemical Pitting And Repassivation On Icosahedral AL-CU-FE, And A Comparison With Crystalline Phases" (1999). Ames Laboratory Conference Papers, Posters, and Presentations. 69.