A New Type of Low Temperature Corrosion Inhibition Quenched Agent for Rebar

To improve the corrosion resistance of rebar,a new type of corrosion inhibition quenched agent was prepared.The corrosion resistances of quenching rebar were researched by atmospheric exposure test (AE) and wet/dry cyclic accelerated corrosion test (CCT).The inhibition mechanism was also investigated by electrochemical test,FTIR,SEM and XRD.The results showed that the dense passive film (thickness about 10 μm) was appeared on the surface of the rebar;the composition of the AE products consisted of α-Fe2O3,γ-Fe2O3,α-FeOOH and iron silicate,and the composition was unchanged but the relative content of each composition was changed;the activation energy of the corrosion reaction increased from 73.8 kJ/mol to 111.3 kJ/mol after quenched with the obtained agent.The corrosion resistance of rebar was significantly enhanced.