| Full text | |
| Author(s): |
Kuroda, Pedro A. B.
;
dos Santos, Rafael F. M.
;
Rossi, Mariana C.
;
Correa, Diego R. N.
;
Grandini, Carlos R.
;
Afonso, Conrado R. M.
Total Authors: 6
|
| Document type: | Journal article |
| Source: | VACUUM; v. 217, p. 12-pg., 2023-09-01. |
| Abstract | |
Titanium and its alloys are widely used in the biomedical field, as they have good mechanical properties for use in orthopedics. However, a surface that promotes bone tissue growth is desired. Although titanium is considered a bioactive element due to its thin layer of passive titanium dioxide, such characteristics can be improved to optimize its surface properties. This study aims to develop the Ti-25Ta-xZr system alloys (x = 0, 25, and 50% by weight) and perform a surface modification, micro-arc oxidation, to increase the bulk protection layer, create a porous layer and incorporate bioactive elements on the surface. The alloys had different phases (alpha", alpha"+beta, and beta), and the surface modification process was able to incorporate calcium, phosphorus, and magnesium. In addition, the X-ray diffraction technique and XPS detected the crystalline phases of the respective alloying elements ox-ides. In this study, adding zirconium increased the amount of the beta phase of "Ti-25Ta" and the surface layer, increased the number of pores, decreased the pore area, and reduced the surface roughness. (AU) | |
| FAPESP's process: | 21/03865-9 - Influence of surface modifications on bioactivity and (tribo) corrosion of beta Ti-Nb-(Zr) alloys with low elastic modulus for application as implant |
| Grantee: | Mariana Correa Rossi |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 18/18293-8 - Titanium alloys: phase transformations and additive manufacturing applied to obtaining functionally graded materials |
| Grantee: | Rubens Caram Junior |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 19/26517-6 - Influence of the microstructure and phases on surface functionalization of beta Ti-25Ta-xZr- alloys system |
| Grantee: | Pedro Akira Bazaglia Kuroda |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |