Influence of grain refinement on the electrochemical behavior of AISI 430 ferritic stainless steel in an alkaline solution

Influence of grain refinement on the electrochemical behavior of AISI 430 ferritic stainless... Applied Surface Science 360 (2016) 921–928 Contents lists available at ScienceDirect Applied Surface Science journal homepage: www.elsevier.com/locate/apsusc Influence of grain refinement on the electrochemical behavior of AISI 430 ferritic stainless steel in an alkaline solution A. Fattah-alhosseini, S. Vafaeian Department of Materials Engineering, Bu-Ali Sina University, Hamedan 65178-38695, Iran article info abstract Article history: In this paper, the effect of grain refinement on the electrochemical behavior of AISI 430 ferritic stain- Received 21 May 2015 less steel in 0.1 M NaOH solution was investigated. Potentiodynamic polarization curves showed that Received in revised form 18 October 2015 fine-grained samples have less corrosion potential, higher corrosion current density, and less protec- Accepted 8 November 2015 tive passive film in comparison to coarse-grained samples. Electrochemical impedance spectroscopy Available online 14 November 2015 (EIS) analysis revealed that implementing the thermomechanical operation led to lower polarization resistance. Also, Mott–Schottky analysis revealed that the passive films on both fine-grained and coarse- Keywords: grained samples behave as n-type and p-type semiconductors and the semiconductor character of the Grain refinement passive films did not change by grain refinement. Moreover, it was found that the calculated donor Thermomechanical and acceptor densities increased with grain refinement. Thus, the presented http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

Influence of grain refinement on the electrochemical behavior of AISI 430 ferritic stainless steel in an alkaline solution

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Publisher
Elsevier
Copyright
Copyright © 2015 Elsevier B.V.
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2015.11.085
Publisher site
See Article on Publisher Site

Abstract

Applied Surface Science 360 (2016) 921–928 Contents lists available at ScienceDirect Applied Surface Science journal homepage: www.elsevier.com/locate/apsusc Influence of grain refinement on the electrochemical behavior of AISI 430 ferritic stainless steel in an alkaline solution A. Fattah-alhosseini, S. Vafaeian Department of Materials Engineering, Bu-Ali Sina University, Hamedan 65178-38695, Iran article info abstract Article history: In this paper, the effect of grain refinement on the electrochemical behavior of AISI 430 ferritic stain- Received 21 May 2015 less steel in 0.1 M NaOH solution was investigated. Potentiodynamic polarization curves showed that Received in revised form 18 October 2015 fine-grained samples have less corrosion potential, higher corrosion current density, and less protec- Accepted 8 November 2015 tive passive film in comparison to coarse-grained samples. Electrochemical impedance spectroscopy Available online 14 November 2015 (EIS) analysis revealed that implementing the thermomechanical operation led to lower polarization resistance. Also, Mott–Schottky analysis revealed that the passive films on both fine-grained and coarse- Keywords: grained samples behave as n-type and p-type semiconductors and the semiconductor character of the Grain refinement passive films did not change by grain refinement. Moreover, it was found that the calculated donor Thermomechanical and acceptor densities increased with grain refinement. Thus, the presented

Journal

Applied Surface ScienceElsevier

Published: Jan 1, 2016

References

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