Corrosion inhibition of steel in naturally-aerated chloride solution by rare-earth 4-hydroxycinnamate compound
| Autor: | T.N. Quyen, T.D. Manh, Nguyen Dang Nam, Pham Van Hien, Quy Bau Nguyen, B.R.W. Hinton |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
General Chemical Engineering Alloy 02 engineering and technology General Chemistry engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Chloride Organic compound 0104 chemical sciences Corrosion Cerium nitrate Corrosion inhibitor chemistry.chemical_compound chemistry Pitting corrosion medicine engineering 0210 nano-technology Polarization (electrochemistry) Nuclear chemistry medicine.drug |
| Zdroj: | Journal of the Taiwan Institute of Chemical Engineers. 103:177-189 |
| ISSN: | 1876-1070 |
| Popis: | The rare-earth organic compound Gadolinium 4-hydroxycinnamate (Gd(4OHCin)3) was characterized and shown to be an effective corrosion inhibitor for mild steel in naturally-aerated 0.1 M chloride solution, not only of general corrosion but also of pitting corrosion. As the inhibition content increased, the corrosion inhibition efficiency increased, up to 94% at concentration of 0.93 mM inhibitor. The results also indicate that Gd(4OHCin)3 behaves as a mixed inhibitor but more predominantly as an anodic inhibitor. The inhibition is attributed to the formation of a protective film layer which acts as a barrier layer on the steel surface. The infrared spectra also confirm a synergetic inhibition mechanism by rare earth and organic components of Gd (4OHCin)3, which depends on inhibitor concentration and immersion time. |
| Databáze: | OpenAIRE |
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