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Effect of aging time on corrosion inhibition of cationic surfactant on mild steel in sulfamic acid cleaning solution

M. Motamedi ; Ali Reza Tehrani-Bagha (Institutionen för kemi- och bioteknik, Teknisk ytkemi) ; M. Mahdavian
Corrosion Science (0010-938X). Vol. 70 (2013), p. 46-54.
[Artikel, refereegranskad vetenskaplig]

The stability of the 1 M sulfamic acid solutions containing a gemini cationic surfactant (12-4-12) or its monomeric counterpart (DTAB) during 23 days of storage were studied by electrochemical impedance spectroscopy (EIS), X-ray diffraction (XRD) and surface tension measurements. The EIS studies indicated that in comparison to DTAB solution, 12-4-12 solution considerably retained the corrosion inhibition during the storage period. The surface tension of DTAB solution was increased around 10 mN/m during storage while the surface tension of 12-4-12 solution was almost unchanged. The higher stability of 12-4-12 acidic solution than that of DTAB was also depicted by XRD results.

Nyckelord: Mild steel, EIS, XRD, Acid inhibition, gemini surfactants, hydrochloric-acid, electrochemical-behavior, m, h2so4, adsorption, media, derivatives, triazoles, halides

Denna post skapades 2013-05-16.
CPL Pubid: 176974


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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Teknisk ytkemi (2005-2014)



Chalmers infrastruktur