Fig. 2: Time-dependent electrochemical behavior of CrCoNi in sulfuric acid.
From: Long-term corrosion studies of CrCoNi and CrMnFeCoNi in sulfuric acid
Development of impedance and phase shift of CrCoNi during 28 d of immersion in 1 M H₂SO₄, showing (a) a color map of impedance magnitude as a function of frequency (y-axis) and time (x-axis), and b the corresponding phase shift map as a function of frequency (y-axis) and time (x-axis). Selected measurements after 0, 7, 14, 21, and 28 d are shown in: c impedance magnitude, d phase shift, and e Nyquist representation, illustrating the changes in the electrochemical response. In (c–e), the original measured data are marked with crosses, while the fitted data are shown as straight lines. f EOCP development throughout the immersion period of 28 d, starting from 150 mV.
