Fig. 7: Surficial and cross-sectional characterisations of the corrodes surfaces. | npj Materials Degradation

Fig. 7: Surficial and cross-sectional characterisations of the corrodes surfaces.

From: Surface evolution and corrosion behaviour of Cu-doped carbide-reinforced martensitic steels in a sulfuric acid solution

Fig. 7

SEM images of the surface regions of the 16Cr steel samples quenched from a 800 and b 1100 °C after immersion in the 0.5 M H2SO4 solution for 3 h. Magnified SEM images of the corroded surfaces of the c martensitic matrix and d carbide particles in the 1100 °C sample. Cross-sectional SEM images of the e 800 °C and f 1100 °C samples obtained during FIB sampling. g STEM observations and the corresponding EDS mapping data obtained for the sample quenched from 1100 °C.

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