Abstract
Corrosion behaviour of low-nickel stainless steel (SS), AISI 304 SS and carbon steel was studied using cyclic anodic polarization curves and electrochemical impedance spectroscopy (EIS). Saturated calcium hydroxide (Ca(OH) 2) solution was used to simulate a concrete pore solution at room temperature. The effect of up to 5.0% sodium chloride (NaCl) concentration in the test solution on the passivity of the alloys was studied. Experimental results showed that low-nickel SS exhibits similar behaviour to conventional AISI 304 SS, with E corr and R ct values of the same order and higher corrosion resistance than traditional carbon steel.
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