Caracterización fisicoquímica de la aleación Ti-6Al-4V ELI tratada termoquímicamente con NaOH

Autores/as

DOI:

https://doi.org/10.33448/rsd-v11i2.25915

Palabras clave:

Aleación Ti-6Al-4V; Tratamiento con NaOH; Titanato de sodio (Na2Ti5O11).

Resumen

El titanio es un elemento complejo y presenta más de una forma cristalográfica, a temperatura ambiente tiene una estructura cristalina hexagonal que se transforma en una estructura centrada en el cuerpo a 800ºC, y un punto de fusión de 1670ºC ± 5ºC. Las aleaciones de titanio tienen propiedades mecánicas superiores al Ti c.p. además de una excelente biocompatibilidad, característica que las convierte en el material de elección en aplicaciones ortopédicas y dentales. La aleación utilizada en este estudio fue la aleación Ti-6Al-4V ELI, obtenida en forma cilíndrica, lijada y posteriormente sometida a tratamiento termoquímico con NaOH. La caracterización fisicoquímica se realizó mediante las técnicas de espectrometría fluorescente de rayos X (XRF), microscopía electrónica de barrido (SEM), difractometría de rayos X (XRD) y espectroscopía de fotoelectrones excitados por rayos X (XPS). Se observó una estructura bifásica (α y β) y la formación de un hidrogel de titanato alcalino (titanato de sodio (Na2Ti5O11)) en la superficie, debido a la reacción de la película de TiO2 con la solución de NaOH. Se concluye que la inmersión de las muestras en NaOH, resultando en la cristalización de la capa de hidrogel de titanato, puede favorecer la formación de fosfatos de calcio, así como la interacción hueso/implante.

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Publicado

04/02/2022

Cómo citar

ITALIANO, A. E. V. .; CARREIRA, A. J.; GUEDES, A. P. P. .; AMÁNTEA, D. V.; VAZ, L. G.; SANTOS, M. L. dos. Caracterización fisicoquímica de la aleación Ti-6Al-4V ELI tratada termoquímicamente con NaOH. Research, Society and Development, [S. l.], v. 11, n. 2, p. e50211225915, 2022. DOI: 10.33448/rsd-v11i2.25915. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/25915. Acesso em: 29 nov. 2024.

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