Abstract
Metal corrosion not only causes huge economic losses, but sometimes even endangers personal safety. Therefore, the requirements for the corrosion resistance of metals are becoming a significant problem. The use of inhibitor is still one of the most common and effective methods to prevent metal corrosion. An environmentally friendly water-based nano-inhibitor containing nano TiO2 was prepared in this work. The open-circuit potential-time curve revealed that the voltage stability value of the steel coated with the proposed inhibitor is −0.51 V, which is higher than −0.54 V of the blank steel plate and commercial inhibitor (-0.52 V), indicating that the proposed nano-inhibitor can improve the stability of the entire system. According to the Tafel polarization curve, the inhibitor coating can significantly increase the corrosion potential, and at the same time reduces the corrosion current density. The EIS plots show that the proposed inhibitor can increase the charge transfer resistance.
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