Abstract
In this work two novel rare-earth (RE) 3-(4-methylbenzoyl)-propanoate (mbp) complexes (RE(mbp)3; RE = La, Y) have been investigated and compared with the well-researched inhibitor, lanthanum 4-hydroxycinnamate (La(4-OHcin)3), for AS1020 mild steel in 0.01 M NaCl solutions. The electrochemical results reveal a high corrosion inhibition performance of Y(mbp)3 which is attributed to the build-up of a protective surface film with a high level of corrosion resistance particularly after 24 h. Surface analyses indicate that the metal surface is protected during the immersion in Y(mbp)3-inhibited solutions and the presence of Y is confirmed on the substrate surface.
Original language | English |
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Pages (from-to) | 199-211 |
Number of pages | 13 |
Journal | Corrosion Science |
Volume | 145 |
DOIs | |
Publication status | Published - 1 Dec 2018 |
Keywords
- Corrosion inhibition
- EIS
- Mild steel
- Polarisation
- Rare-earth carboxylate
- SEM