Intelligentization of traditional sacrificial anode Zn by Mg-alloying for reinforcing steel

Traditional sacrificial anode Zn was intelligentized by Mg-alloying to automatically detect chloride contamination and smartly protect reinforcing steel. The intelligence of the Zn-Mg alloys was investigated in a simulated concrete pore solution (SCPS) contaminated by different concentrations of chloride. The results showed that the Zn-11Mg, Zn-32Mg, Zn-43Mg and Zn-66Mg were more sensitive to chloride contamination and could provide more sufficient current to protect the steel according to the corrosivity of the contaminated solution than the Zn, Zn-6Mg, Zn-19Mg and Mg. The corrosion resistance and the anodic behavior of these alloys coupled with the steel were systematically analyzed.

Automated summary

Traditional sacrificial anode Zn was made intelligent by Mg-alloying to automatically detect chloride contamination and smartly protect reinforcing steel. The Zn-Mg alloys, such as Zn-11Mg, Zn-32Mg, Zn-43Mg, and Zn-66Mg, were found to be more sensitive to chloride contamination and capable of providing sufficient current to protect steel based on the corrosivity of the contaminated solution. The corrosion resistance and anodic behavior of these alloys coupled with steel were systematically analyzed.