Innovative techniques for producing biocompatible materials – BIOCOMPLEXMAT

Funding agency: PNCDI II – AMCESIT - Inovare, Project C115 / 2007

Coordinator - PRELUCRARI METALURGICE PROD SRL, Project manager: Eng. Dorel Nedelcu

Partners:

P1. “Politehnica” University - CEMS, Project manager: Prof. Dr. Eng. Georgeta Cosmeleata

P2. INOE 2000 –Magurele, Partner project manager: Dr. M. Braic

P3. Spital COLTEA, Buharest, Partner project manager: Dr. Roxana Siliste

P4. Universitatea "Eftimie Murgu" din Resita, Partner project manager: Prof. Dr. Eng. Doina Frunzaverde

Objective

Novel methods for producing Ti-based alloys that are appropriate for use in implantology

New corrosion-resistant coatings with improved biocompatibility

Novel coatings that resist corrosion and have enhanced biocompatibility

Accurate testing of the new materials.

Specific objectives for INOE 2000:

v Novel coatings with high adhesion to the metal substrate, corrosion resistant, with superior biocompatibility

Results:

Deposition method: magnetron sputtering

Recently attention has been given to ternary and quaternary hard coatings as promising candidates for wear, erosion, and corrosion protective coatings in various industrial applications. The addition of different elements in standard Ti-based nitride and carbide coatings improved the oxidation resistance and the wear-corrosion behavior of the films.

Auger electron spectroscopy of TiZrCN films

Ti = 20.5 %

Zr = 10.02 %

C = 18.01 %

N = 42.09 %

O = 9.37 %

Ti = 18.18 %

Zr = 11.96 %

C = 8.27 %

N = 53.66 %

O = 7.93 %

The presence of a small amount of oxygen is due

both to residual gas incorporated in the chamber walls

and to the film contamination during the time elapsed

between the film preparation and the composition analysis.

1. Published papers

- Multi-purpose Materials with Bioactive Effect Intended for Implantology, I. Nedelcu, G. Cosmeleata, I. Carceanu, I.A. Cojanu, D. Nedelcu, M. Braic, Metalurgia International, 14 (2009) 57-60

- Structural, mechanical and anti-corrosive properties of biocompatible Zr/ZrCN coatings, C.M. Cotrut, C.N. Zoita, A. Kiss, M. Braic, M. Balaceanu, V. Braic, A. Vladescu, European Cells and Materials 16 (2008) 30.

- Thin films of metallic nitrides and carbides for Osteosynthesis improvement of the implants used in orthopedic surgery, M. Balaceanu, A. Kiss, V. Braic, C. Zoita, M. Braic, C.M. Cotrut, I. Antoniac, A. Vladescu, Bulletin of the Transilvania University of Brasov series A, 4 (2007) 493 – 497.