| Revue: | Revista mexicana de física |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000397539 |
| ISSN: | 0035-001X |
| Autores: | Castro Hermosa, S.A1 Alfonso, J.E1 Olaya, J.J1 |
| Instituciones: | 1Universidad Nacional de Colombia, Departamento de Física, Bogotá. Colombia 2Universidad Nacional de Colombia, Grupo de Investigación Análisis de Fallas, Integridad y Superficies, Bogotá. Colombia |
| Año: | 2016 |
| Periodo: | Mar-Abr |
| Volumen: | 62 |
| Número: | 2 |
| Paginación: | 138-143 |
| País: | México |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico, teórico |
| Resumen en inglés | We present an experimental study of the structural evolution of a bilayer VX NbY CZ /Bix TiY OZ coating produced via thermo-reactive diffusion (TRD) and the RF sputtering process on D2 steel substrate. The TRD treatments were carried out in a molten mixture consisting of borax, ferro-niobium, ferro-vanadium, and aluminum, at 1313 K for 3 hours, using a resistance-heating furnace. BiXTiYOZ coatings were deposited using RF magnetron sputtering on TRD coatings, in order to carry out a study of the corrosion behavior of this compound. The crystallographic structure of the coatings was determined via X-ray diffraction (XRD), the corrosion resistance was analyzed through the po-tentiodynamic polarization test (Tafel Extrapolation) and electrochemical impedance spectroscopic analysis (EIS). XRD patterns showed that the ternary coating (VNbC2) was preferentially oriented along the [200] direction with a cubic-centered face structure, and the BiXTiYOZ coatings were amorphous. The electrochemical studies showed that the resistance corrosion of the coatings increased with respect to the bare substrate, and that polarization resistance in the bilayer coatings increased with respect to the ternary coatings, suggesting that the titanate has anticorrosive barrier effects |
| Disciplinas: | Física y astronomía, Química |
| Palabras clave: | Acústica, Fisicoquímica y química teórica, Difusión termorreactiva, Revestimientos de titanato de bismuto, Resistencia a la corrosión, Pulverización |
| Keyword: | Physics and astronomy, Chemistry, Acoustics, Physical and theoretical chemistry, Thermo reactive difussion, Bismuth titanate coatings, Corrosion resistance, Sputtering |
| Texte intégral: | Texto completo (Ver PDF) |
