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Artículo

Evaluation of the influence of texture and microstructure of titanium substrates on TiO2 anodic coatings at 60 V

Vera, Maria LauraIcon ; Avalos, Martina CeciliaIcon ; Rosenberger, Mario RobertoIcon ; Bolmaro, Raul EduardoIcon ; Schvezov, Carlos EnriqueIcon ; Ares, Alicia EstherIcon
Fecha de publicación: 06/2017
Editorial: Elsevier Science Inc
Revista: Materials Characterization
ISSN: 1044-5803
e-ISSN: 1873-4189
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Recubrimientos y Películas

Resumen

The current paper analyzes the influence of texture and microstructure of Ti substrates on morphology and color of titanium dioxide coatings obtained by anodic oxidation. Substrates of Ti grade 2 and Ti grade 5 with different thermo-mechanical histories were used in the shape of cylindrical bars cut in both longitudinal and transversal directions, and laminated sheets. The crystalline orientation of the surface grains in the substrate before oxidation, were determined by electron backscatter diffraction. The oxide coatings were analyzed by optical and scanning electron microscopy. The results show that different substrate grain orientations produce oxides with different colors, because of different thickness depending on their orientations. An oxide grown on a basal hcp plane, with higher atomic density is thinner than an oxide grown on a transversal hcp plane with lower atomic density. This effect is more pronounced on elongated grains. Different anodic oxidation process parameters and heat treatments of the substrate were applied in order to obtain a more uniform oxide thickness. A specific heat treatment of the substrate was the most efficient, starting from a favorable orientation of crystals, characteristic of rolling texture.
Palabras clave: 60 V , Colors Oxide , Ebsd , Texture , Tio2 Anodic Coatings
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/44444
DOI: http://dx.doi.org/10.1016/j.matchar.2017.07.005
URL: https://www.sciencedirect.com/science/article/pii/S1044580316313067
Colecciones
Articulos(IMAM)
Articulos de INST.DE MATERIALES DE MISIONES
Citación
Vera, Maria Laura; Avalos, Martina Cecilia; Rosenberger, Mario Roberto; Bolmaro, Raul Eduardo; Schvezov, Carlos Enrique; et al.; Evaluation of the influence of texture and microstructure of titanium substrates on TiO2 anodic coatings at 60 V; Elsevier Science Inc; Materials Characterization; 131; 6-2017; 348-358
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Separar cada destinatario (hasta 5) con punto y coma.
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