Influence of the porosity and type of bioglass on the micro-mechanical and bioactive behavior of coated porous titanium substrates
- Others:
- Universidad de Sevilla. Departamento de Química Orgánica y Farmacéutica
- Universidad de Sevilla. Departamento de Física de la Materia Condensada
- Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte
- Ministerio de Ciencia e Innovación (MICIN). España
- Junta de Andalucía
Description
In this study, the best equilibrium among adherence, micro-mechanical properties and coating bioactivity of bioactive glasses (45S5 and 1393) on porous titanium substrates has been explored and their potential uses for bone tissue implants. Porous titanium discs with different porosities (30 and 60 vol.%) and pore size distributions (100–200 and 355–500 µm) were utilized to rationalize their influence on both properties and performance. It was corroborated that porous samples produced a reduction in micro-hardness (~ 2000–4000 N/mm2) and the elastic modulus (~25–50 GPa), obtaining values closer to those of human bones, as well as induced a beneficial role to integrate the coatings. On one hand, bioglass 1393 presented greater capacity for pore infiltration while 45S5 was more bioactive. The results explained the better adherence and microhardness for bioglass 1393 and the significant formation of hydroxyapatite and calcium phosphates of bioglass 45S5, confirmed by 29Si MAS NMR.
Abstract
Ministerio de Ciencia e Innovación PID2019-109371GB-I00
Abstract
Junta de Andalucía US-1259771
Additional details
- URL
- https://idus.us.es/handle//11441/152700
- URN
- urn:oai:idus.us.es:11441/152700
- Origin repository
- USE