Abstract
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.
Original language | English |
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Pages (from-to) | 46-54 |
Number of pages | 9 |
Journal | Corrosion Science |
Volume | 70 |
DOIs | |
Publication status | Published - 1 May 2013 |
MoE publication type | A1 Journal article-refereed |
Keywords
- A. Mild steel
- B. EIS
- B. XRD
- C. Acid inhibition