Effect of aging time on corrosion inhibition of cationic surfactant on mild steel in sulfamic acid cleaning solution
Artikel i vetenskaplig tidskrift, 2013

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.

Mild steel

hydrochloric-acid

adsorption

gemini surfactants

EIS

media

h2so4

Acid inhibition

derivatives

triazoles

electrochemical-behavior

halides

m

XRD

Författare

M. Motamedi

Amirkabir University of Technology

Ali Tehrani

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

M. Mahdavian

Sahand University of Technology

Corrosion Science

0010-938X (ISSN)

Vol. 70 46-54

Ämneskategorier

Kemiteknik

Kemi

DOI

10.1016/j.corsci.2013.01.007