Abstract
A new heteroercyclic compound, isonicotinaldehyde thiosemicarbazone (INT), has been synthesized. The inhibition efficiency for Q235 steel in 1 mol/L HCl solution was evaluated by means of mass loss, potentiodynamic polarization and electrochemical impedance spectroscopy. Then, the surface morphology was observed by scanning electron microscopy. It was found that INT exhibits excellent inhibition performance and the highest inhibition efficiency reaches 83.6% by 1.5 mmol/L. The adsorption of INT on Q235 steel followed the Langmuir adsorption isotherm and INT acted as a mixed type inhibition with cathodic inhibition as dominative action.
| Original language | English |
|---|---|
| Pages (from-to) | 303-307 |
| Number of pages | 5 |
| Journal | Corrosion Science and Protection Technology |
| Volume | 25 |
| Issue number | 4 |
| State | Published - 2013 |
Keywords
- Electrochemical measurement
- Inhibitor
- Mass loss experiment
- Q235 steel