Abstract
The corrosion behaviour of different steels immersed in the simulated pore solutions was investigated using electrochemical measurements, XPS, and SEM/EDS. The results showed that the incorporation of granulated blast furnace slag increased the content of HS− which inhibited the passivation through forming the Fe-S complex. The presence of HS− increased the film thickness but the corrosion resistance was still low due to the porous structure of Fe-S complex on the surface. Severe active corrosion occurred on low-carbon steels in the presence of chlorides while scanty pitting was observed for low-alloy steels attributed to the existence of Cr inside pits.
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