A study of rare-earth 3-(4-methylbenzoyl)-propanoate compounds as corrosion inhibitors for AS1020 mild steel in NaCl solutions

Peng, Yu, Hughes, Anthony E., Deacon, Glen B., Junk, Peter C., Hinton, Bruce R.W., Forsyth, Maria, Mardel, James I., and Somers, Anthony E. (2018) A study of rare-earth 3-(4-methylbenzoyl)-propanoate compounds as corrosion inhibitors for AS1020 mild steel in NaCl solutions. Corrosion Science, 145. pp. 199-211.

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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.

Item ID: 56738
Item Type: Article (Research - C1)
ISSN: 1879-0496
Keywords: mild steel, rare-earth carboxylate, EIS, polarisation, SEM, corrosion inhibition
Copyright Information: © 2018 Published by Elsevier Ltd. All rights reserved.
Funders: ARC Centre of Green Chemistry, Deakin University
Date Deposited: 26 Dec 2018 07:44
FoR Codes: 03 CHEMICAL SCIENCES > 0302 Inorganic Chemistry > 030202 f-Block Chemistry @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100%
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