Journal
CORROSION SCIENCE
Volume 100, Issue -, Pages 365-376Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2015.08.020
Keywords
Steel reinforced concrete; SEM; XPS; EIS; Neutral inhibitor
Funding
- National Natural Science Foundation of China [51471175]
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The corrosion inhibition effect of phytic acid on 20SiMn steel in simulated carbonated concrete pore solution contaminated by Cl- was investigated by weight loss, electrochemical measurements, scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. Results show that the inhibition efficiency of IP6 is up to 84.0% after 72 h immersion. An deposited film forms on the surface of specimen after the addition of IP6, which includes three layers: the inner layer consists of Fe3O4 and FeOOH; the middle layer contains Fe3O4, FeOOH and FePO4; the outer layer consists of Fe3O4, FeOOH, FePO4 and Fe(II)-IP6. (C) 2015 Elsevier Ltd. All rights reserved.
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