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Effect of tannic acid on corrosion behavior of carbon steel in NaCl solution
Xu, Wenhua; Han, En-Hou; Wang, Zhenyu
2019
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume35Issue:1Pages:64-75
AbstractCorrosion behavior of unrusted Q235 carbon steel was investigated in 3.5% NaCl solutions with 1-5 wt% tannic acid addition, using electrochemical methods including electrochemical impedance spectra (EIS), potentiodynamic polarization and scanning vibrating electrode technique (SVET) combined with surface analysis. Results show that the corrosion rate decreases with increasing tannic acid concentration. As compared with tannic acid-free solution, 1% tannic acid does not provide inhibition effect during the whole immersion, while inhibition effect is observed for 3% tannic acid after 8 h and for 5% tannic acid after 4 h. The inhibition efficiency by weight loss measurements (eta(w)) for 1%, 3%, and 5% tannic is around -17.2%, 40.3%, and 51.5%, respectively. Corrosion of unrusted carbon steel in the presence of tannic acid is attributed to the joint effect of tannic acid adsorption and pH decrease. Formation of ferric-tannates is verified by X-ray photoelectron spectroscopy (XPS) and Raman spectra. The reaction mechanism between tannic acid and unrusted carbon steel is proposed. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordTannic acid Unrusted carbon steel Ferric-tannates EIS Corrosion
Indexed BySCI
Language英语
WOS IDWOS:000449263900010
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81514
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Xu, Wenhua,Han, En-Hou,Wang, Zhenyu. Effect of tannic acid on corrosion behavior of carbon steel in NaCl solution[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(1):64-75.
APA Xu, Wenhua,Han, En-Hou,&Wang, Zhenyu.(2019).Effect of tannic acid on corrosion behavior of carbon steel in NaCl solution.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(1),64-75.
MLA Xu, Wenhua,et al."Effect of tannic acid on corrosion behavior of carbon steel in NaCl solution".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.1(2019):64-75.
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