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Title: Corrosion protection of N80 steel in hydrochloric acid medium using mixed C15H15NO and Na2WO4 inhibitors
Authors: Hu, Jun
Wang, Tiantian
Wang, Zhen
Wei, Liping
Zhu, Jianbo
Zheng, Maosheng
Chen, Zhong
Keywords: DRNTU::Engineering::Materials
Binding Energy
Corrosion Inhibition
Issue Date: 2018
Source: Hu, J., Wang, T., Wang, Z., Wei, L., Zhu, J., Zheng, M., & Chen, Z. (2018). Corrosion protection of N80 steel in hydrochloric acid medium using mixed C15H15NO and Na2WO4 inhibitors. Coatings, 8(9), 315-. doi:10.3390/coatings8090315
Series/Report no.: Coatings
Abstract: A novel inhibitor based on mixed Mannich base (C15H15NO) and Na2WO4 was developed for the corrosion prevention of N80 steel in hydrochloric acid solution. Infra-red spectrum, electrochemical measurements, X-ray Photoelectron Spectroscopy, and Scanning Electron Microscopy were used to understand the inhibition efficiency and mechanism. The results showed that the mixed inhibitors reduced the corrosion current density and increased the interface resistance. The inhibition efficiency is the highest when the ratio of C15H15NO to Na2WO4 is 1:1 in the mixture. Observed from the surfaces, the number of pits and small cracks was reduced on the surface in the presence of the optimized inhibitors. The inhibition film can successfully hinder the chloride ions from reaching the bulk steel.
ISSN: 2079-6412
DOI: 10.3390/coatings8090315
Rights: © 2018 The Author(s). Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles


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