Effects of Nb and Cr on the Corrosion Characterization of Al-Containing Transformation-Induced Plasticity Steels in Neutral Chloride Solutions
- Citation:
- Heakal, E. - T. F., O. S. Shehata, and N. S. Tantawy, "Effects of Nb and Cr on the Corrosion Characterization of Al-Containing Transformation-Induced Plasticity Steels in Neutral Chloride Solutions", Corrosion Science Section, 2011.
Abstract:
Electrochemical measurements were used to characterize the effect of Nb and Cr on the corrosion behavior of two types of Al-bearing transformation-induced plasticity (TRIP) steels in naturally aerated sodium chloride (NaCl) solutions over a wide concentration range. In all cases, the open-circuit potential shifts toward more negative values with time until the potential acquires a steady-state value, which depends on both steel composition and chloride concentration. The sample with higher Al content (1.32 wt%) displays significantly more negative corrosion potential (Ecorr), larger corrosion current density (icorr) in polarization curves and lower fitted film resistance (R1) values in electrochemical impedance spectroscopy (EIS) plots.
Notes:
n/a