Abstract
The corrosion inhibition of AA2024-T4 in 3.5% NaCl solution by 8-hydroxylquinoline (8-HQ) was investigated by potentiodynamic polarisation (PDP), electrochemical impedance spectroscopy and dynamic electrochemical impedance spectroscopy. Experimental results were supported with scanning electron microscopy (SEM), atomic force microscopy and Fourier transform-infrared (FTIR) spectroscopy analysis. It was found that 8-HQ molecules adsorbed on the alloy surface and protected it against corrosion. SEM, energy dispersive spectroscopy, and FTIR results confirm the adsorption of 8-HQ molecules on AA2024-T4. The inhibition efficiency of 8-HQ is found to increase with increase in concentration and the highest concentration studied (0.05 M) offered corrosion inhibition efficiency of 84%. PDP results show that 8-HQ acts as mixed type inhibitor in the studied medium.
| Original language | English |
|---|---|
| Pages (from-to) | 207-223 |
| Number of pages | 17 |
| Journal | Journal of Adhesion Science and Technology |
| Volume | 32 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 17 Jan 2018 |
| Externally published | Yes |
Keywords
- 8-hydroxylquinoline
- AA2024-T4
- corrosion
- corrosion inhibition
- electrochemical techniques
ASJC Scopus subject areas
- General Chemistry
- Mechanics of Materials
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry