Abstract
The corrosion inhibition effect of phytic acid conversion coatings formed on Q235 carbon steel was evaluated by potentiodynamic polarization curves and electrochemistry impedance spectroscopy. The phytic acid conversion coating on carbon steel surface prepared in 0.06 mol/L pH 7.0 phytic acid solution for 1 h has the best inhibition effect with inhibition efficiency up to 96.7%. Though the phytic acid conversion coating adheres to the carbon steel surface through physi- sorption, the coating possesses fairly well adhesiveness to the substrate. SEM and XPS results show the prepared coating on carbon steel surface is a composite coating of phytic acid conversion coating and Fe2O3 passivation film, while the two components have synergistic effect.
| Original language | English |
|---|---|
| Pages (from-to) | 549-558 |
| Number of pages | 10 |
| Journal | Journal of the Chinese Society of Corrosion and Protection |
| Volume | 36 |
| Issue number | 6 |
| DOIs | |
| State | Published - Dec 2016 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2016, Chinese Society of Corrosion and Protection. All rights reserved.
Keywords
- Conversion coating
- EIS
- Phytic acid
- Polarization curve
- Q235 carbon steel
- XPS
ASJC Scopus subject areas
- General Materials Science
- General Engineering
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