Characterization of the passive film formed on the reinforcement surface in alkali activated fly ash: surface analysis and electrochemical evaluation
Article
Article Title | Characterization of the passive film formed on the reinforcement surface in alkali activated fly ash: surface analysis and electrochemical evaluation |
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ERA Journal ID | 4761 |
Article Category | Article |
Authors | Chen, Rui (Author), Hu, Jie (Author), Ma, Yuwei (Author), Guo, Wenhao (Author), Huang, Haoliang (Author), Wei, Jiangxiong (Author), Yin, Suhong (Author) and Yu, Qijun (Author) |
Journal Title | Corrosion Science |
Journal Citation | 165, pp. 1-16 |
Article Number | 108393 |
Number of Pages | 16 |
Year | 2020 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 0010-938X |
1879-0496 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.corsci.2019.108393 |
Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S0010938X19301246 |
Abstract | Due to different ion types and concentration in pore solution, the passive film on the steel surface possesses different characteristics in alkali-activated fly ash (AAFA). In this study, the passive film formed in simulated AAFA pore solution was investigated by surface analysis and electrochemical measurements. The passive film possessed bilayer structure with FeOOH-rich outer layer and FeO-rich inner layer in simulated AAFA pore solution. Further, a firmly adsorbed zeolite-like layer (200 nm) formed on the steel surface. The formation of more protective passive film and adsorbed layer resulted in higher corrosion resistance of the reinforcement in simulated AAFS pore solution. |
Keywords | steel reinforced concrete, passive films, XPS, EIS, AFM |
ANZSRC Field of Research 2020 | 400505. Construction materials |
Byline Affiliations | South China University of Technology, China |
Centre for Future Materials | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5931/characterization-of-the-passive-film-formed-on-the-reinforcement-surface-in-alkali-activated-fly-ash-surface-analysis-and-electrochemical-evaluation
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