Corporate crime under attack: The Ford Pinto case and beyond
1990; Elsevier BV; Volume: 18; Issue: 3 Linguagem: Inglês
10.1016/0047-2352(90)90011-y
ISSN1873-6203
AutoresFrancis T. Cullen, William J. Maakestad, Gray Cavender,
Tópico(s)Corrosion Behavior and Inhibition
ResumoIn the present work, we comparatively studied the corrosion attack of Zn-based coatings on interstitial free steel. For this, the electrochemical behavior of industrially coated hot-dip galvanized (GI), galvanneal (GA) and galvalume (Zn55Al) interstitial free (IF) steels was analyzed by cyclic voltammetry in quiescent and stirred 0.1 mol/L NaCl solution and by scanning vibrating electrode technique (SVET). All three coatings protect the steel substrate by their localized corrosion leading to final coating perforation. However, Zn55Al corrodes more homogenously due to a well-distributed interdendritic η phase and the barrier effect of interfacial Al–Fe intermetallics. Due to its surface cracks, GA presents the opposite behavior, suffering a substrate attack with only 70% of the charge density expected for GI.
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