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  4. New insights into the inhibition mechanism of carboxylate species on magnesium surface
 
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New insights into the inhibition mechanism of carboxylate species on magnesium surface

Publikationstyp
Journal Article
Date Issued
2024-05-15
Sprache
English
Author(s)
Zhou, Yuxin
Lu, Xiaopeng
Würger, Tim  orcid-logo
Kunststoffe und Verbundwerkstoffe M-11  
Höche, Daniel  
Helmholtz-Zentrum hereon GmbH, Institut für Werkstoffforschung
Zheludkevich, Mikhail L.  
Wang, Fuhui
TORE-URI
https://hdl.handle.net/11420/47152
Journal
Corrosion science  
Volume
232
Article Number
112009
Citation
Corrosion Science 232: 112009 (2024)
Publisher DOI
10.1016/j.corsci.2024.112009
Scopus ID
2-s2.0-85189185071
Publisher
Elsevier Science
The microstructure and composition of corrosion film deposited on pure Mg were systematically investigated, and for the first time DFT was used to reveal the adsorption behavior of carboxylates on the surface of corrosion layer rather than the metallic Mg. Presence of carboxylate inhibitor dramatically modified composition of the corrosion film and bonded directly with Mg atoms in the outermost MgO based corrosion layer by means of carboxyl. The bonded Mg atoms were lifted by 0.8 – 1.1 Å from their original position when abundant inhibitors started to act as complexing agent, leading to deteriorated inhibition effect.
Subjects
DFT
Inhibitor
Interface
Magnesium
DDC Class
540: Chemistry
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