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In-depth insights of inhibitory behaviour of 2-amino-4-methylthiazole towards galvanised steel in neutral NaCl solution

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Date

2022-05-01

Authors

Deng, Qiushi
Jeschke, Steffen
Murdoch, Billy J.
Hirth, Sabine
Eiden, Philipp
Gorges, Jan N.
Keil, Patrick
Chen, Xiao Bo
Cole, Ivan

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Abstract

Inhibitory behaviour of 2-amino-4-methyl-thiazole (2AT-Me) towards electro-galvanised steel (ZE) was investigated in neutral NaCl solution by electrochemical and surface analyses. It revealed that 2AT-Me acts as a mixed-type inhibitor with pronounced inhibition efficiency above 90% at a concentration of 15 mM. The adsorption behaviour of 2AT-Me upon ZE surface aligns with the Temkin adsorption isotherm. Moreover, surface studies illustrated that the formed protective film exhibits a multi-layered spatial structure comprising of passive oxides and inhibitor layers. The findings show promises for deploying small thiazole-based compounds in corrosion inhibition of ZE and zinc surfaces.

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Keywords

A: Galvanised steel, B: EIS, XPS depth profile, XPS, SEM-FIB, C: Neutral corrosion inhibitor

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https://hdl.handle.net/1885/733810433

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ANU Research Publications

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Corrosion Science

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Journal article

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DOI

10.1016/j.corsci.2022.110206

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