Fig. 3: Analysis of the passive film of the CoCrFeNiN0.07 HEAs specimens passivated for 3 h in 0.5 M H2SO4 solution at a potential of 0.7 V (within the passive region). | npj Materials Degradation

Fig. 3: Analysis of the passive film of the CoCrFeNiN0.07 HEAs specimens passivated for 3 h in 0.5 M H2SO4 solution at a potential of 0.7 V (within the passive region).

From: 3D printed N-doped CoCrFeNi high entropy alloy with more than doubled corrosion resistance in dilute sulphuric acid

Fig. 3

a A bright-field TEM images of the cross-section at passive film areas and the measured thicknesses; b Mott-Schottky plots; c calculated relative fraction of the metallic elements in the outmost surface of passive films, and d donor and acceptor densities for passive films on SLM, HIP, and CR HEAs.

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