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Synthesis and Characterization of Hydrotalcite/Graphene Oxide Containing Benzoate for Corrosion Protection of Carbon Steel

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주제분류금속공학

초록

This work examined the corrosion protection performance of benzoate loaded hydrotalcite/graphene oxide(HT/GO-BZ) for carbon steel. HT/GO-BZ was fabricated by the co-precipitation method and characterizedby infrared spectroscopy, X-ray diffraction, and scanning electronic microscopy. The corrosion inhibitionaction of HT/GO-BZ on carbon steel in 0.1 M NaCl solution was evaluated by electrochemical measurements. The benzoate content in HT/GO-BZ was determined by UV-Vis spectroscopy. Subsequently, the effect ofHT/GO-BZ on the corrosion resistance of the water-based epoxy coating was investigated by the salt spraytest. The obtained results demonstrated the intercalation of benzoate and GO in the hydrotalcite structure. The benzoate content in HT/GO-BZ was about 16%. The polarization curves of the carbon steel electroderevealed anodic corrosion inhibition activity of HT/GO-BZ and the inhibition efficiency was about 95.2%at a concentration of 3g/L. The GO present in HT/GO-BZ enhanced the inhibition effect of HT-BZ. Thepresence of HT/GO-BZ improved the corrosion resistance of the waterborne epoxy coating.

Abstract

This work examined the corrosion protection performance of benzoate loaded hydrotalcite/graphene oxide(HT/GO-BZ) for carbon steel. HT/GO-BZ was fabricated by the co-precipitation method and characterizedby infrared spectroscopy, X-ray diffraction, and scanning electronic microscopy. The corrosion inhibitionaction of HT/GO-BZ on carbon steel in 0.1 M NaCl solution was evaluated by electrochemical measurements. The benzoate content in HT/GO-BZ was determined by UV-Vis spectroscopy. Subsequently, the effect ofHT/GO-BZ on the corrosion resistance of the water-based epoxy coating was investigated by the salt spraytest. The obtained results demonstrated the intercalation of benzoate and GO in the hydrotalcite structure. The benzoate content in HT/GO-BZ was about 16%. The polarization curves of the carbon steel electroderevealed anodic corrosion inhibition activity of HT/GO-BZ and the inhibition efficiency was about 95.2%at a concentration of 3g/L. The GO present in HT/GO-BZ enhanced the inhibition effect of HT-BZ. Thepresence of HT/GO-BZ improved the corrosion resistance of the waterborne epoxy coating.

참고문헌 (24)

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