Jandova, V and Fajgar, R. and Kupcik, J. and Pola, J. and Soukup, K. and Mikysek, P. and Krenek, T. and Kovarik, T. and Stich, T. and Docheva, D. (2020) Corrosion behavior of titanium silicide surface with hydrogen peroxide: Formation of sub-mu m TiOx- based spheres, nanocomposite TiOx/SiOx phases, and mesoporous TiOx/SiOx network. APPLIED SURFACE SCIENCE, 529: 147133. ISSN 0169-4332, 1873-5584
Full text not available from this repository. (Request a copy)Abstract
So far unexplored corrosion of titanium silicide (Ti5Si3) surface with acidified hydrogen peroxide is of interest due to its potential use in improving osseointegration of titanium implants coated by titanium silicides. Detailed examination of corrosion products by FTIR, Raman and XP spectroscopy, electron microscopy, XRD, BET and light scattering techniques allows recognition of hydrated nanocomposite TiOx/SiOx (x <= 2) phases composed of segregated amorphous SiOx species and TiOx-based networks containing Ti-O-Si and -O-O-bonds. The appearance of the TiOx networks depends on the extent of peroxidation. A less progressed peroxidation yields sub mu m-sized TiOx-based spheres which upon annealing develop anatase nanograins withstanding 800 degrees C. A more progressed peroxidation produces larger mesoporous TiOx-based bodies which disintegrate upon sonication into micrometer-sized entities. The proposed mechanism of surface corrosion is based on the complementary use of analytical techniques. The one-step production of bioactive (hydrated TiOx and SiOx) species deserves to be explored in osseointegration studies of slightly corroded Ti5Si3-coated titanium implants.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ROOM-TEMPERATURE DEPOSITION; CALCIUM-PHOSPHATE FORMATION; METALLIC TITANIUM; IN-VITRO; SOL-GEL; OXIDE; FILMS; SI; OXIDATION; COATINGS; Titanium silicide; Hydrogen peroxide; SiOx microphases; TiOx and SiOx nanophases particles |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Unfallchirurgie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Mar 2021 10:53 |
| Last Modified: | 08 Mar 2021 10:53 |
| URI: | https://pred.uni-regensburg.de/id/eprint/43498 |
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