Evaluation of the electrochemical behavior of TiO2/Al2O3/PCL composite coatings in Hank's solution
| Autor: | Marco Antonio Espinosa-Medina, Erasmo Cadenas, N. N. Zurita-Méndez, Miriam Estevez, L. Ballesteros-Almanza, G. Carbajal-De la Torre |
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| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Materials science Scanning electron microscope Composite number chemistry.chemical_element 02 engineering and technology Polymer engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Corrosion chemistry.chemical_compound chemistry Coating Chemical engineering Rutile Polycaprolactone engineering General Materials Science 0210 nano-technology Titanium |
| Zdroj: | Materials Chemistry and Physics. 235:121773 |
| ISSN: | 0254-0584 |
| DOI: | 10.1016/j.matchemphys.2019.121773 |
| Popis: | This study focuses in the TiO2/Al2O3 powders synthesized by the sol-gel at low vacuum atmosphere, incorporated to polycaprolactone polymer. The corrosion study of coating was realized by electrochemical techniques. The precursors for synthesis of TiO2/Al2O3 powders were titanium and aluminum isopropoxides. The obtained powders were sintered at 350 °C and 1100 °C, then, they were mixed within polycaprolactone matrix. Results showed the rutile and corundum crystalline phases at 1100 °C. Electrochemical results showed a corrosion resistance improvement by the composite coatings, followed by formation and growing of the porous network. The corrosion behavior was governed by diffusion mechanism through the coating thickness. Scanning Electron Microscopy Characterization complemented the coating evaluation. |
| Databáze: | OpenAIRE |
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