Corrosion behaviour investigation of the four Cr-Mn-(Ni-free) austenitic steels in 0.1 M H2SO4 solution
In this study، the four Cr-Mn- (Ni-free) austenitic steels were fabricated by vacuum induction furnace. Then plates with 10 mm thickness were fabricated by hot-rolling. Corrosion behaviour of the four Cr-Mn steels in 0. 1 M H2SO4 solution was investigated using by open-circuit potential، potentiodynamic polarization، and electrochemical impedance spectroscopy (EIS). The results indicated that the open-circuit potentials of the four Cr-Mn austenitic steels were found to shift towards positive direction. Also، the potentiodynamic polarization curves suggested that the four Cr-Mn austenitic steels showed comparable passive behaviour in sulfuric solutions.
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