On the corrosion resistance of AISI 316L-type stainless steel coated with manganese and annealed with flow of oxygen

محورهای موضوعی : Journal of Theoretical and Applied Physics

Hadi Savaloni ¹ , Ensieh Agha-Taheri ² , Fateme Abdi ³

1 - Department of Physics, University of Tehran
2 - Department of Physics, Islamic Azad University, Science and Research Branch
3 - Department of Physics, University of Tehran

تاریخ پذیرش : 1395/03/12 تاریخ انتشار : 1395/03/12

کلید واژه: MnO, Stainless steel, Thin Film, Annealing, Corrosion resistance, Electrochemical impedance spec, Potentiodynamic,

چکیده مقاله :

AbstractAISI 316L-type stainless steel was coated with 300-nm-thick Mn thin films and post-annealed at 673 K with a constant flow of oxygen (250 cm3/min). The films crystallographic and morphological structures were analyzed using X-ray diffraction (XRD) and atomic force microscopy (AFM) before corrosion test and scanning electron microscopy (SEM) after corrosion test. Corrosion behavior of the samples in 0.3, 0.5 and 0.6 M NaCl solutions was investigated by means of potentiodynamic and electrochemical impedance spectroscopy (EIS) techniques. Results showed that the corrosion inhibition of annealed Mn/SS316L in all NaCl solutions with different concentrations is higher than that of bare SS316L. A correlation is achieved between the structural variation of the films with the potentiodynamic and EIS corrosion results.