Growth and surface characterization of TiNbZr thin films deposited by magnetron sputtering for biomedical applications

Autor(es)

Tallarico, D. A. ^[1] ; Gobbi, A. L. ^[2] ; Paulin Filho, P. I. ^[3] ; Maia da Costa, M. E. H. ^[4] ; Nascente, P. A. P. ^[3]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Mat Sci & Engn Graduat Program, BR-13565905 Sao Carlos, SP - Brazil

^[2] Brazilian Nanotechnol Natl Lab, BR-13083100 Campinas, SP - Brazil

^[3] Univ Fed Sao Carlos, Dept Mat Engn, BR-13565905 Sao Carlos, SP - Brazil

^[4] Pontificia Univ Catolica Rio de Janeiro, Dept Phys, BR-22451900 Rio De Janeiro, RJ - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Materials Science & Engineering C-Materials for Biological Applications; v. 43, p. 45-49, OCT 1 2014.
• Citações Web of Science: 15

Resumo

Low modulus of elasticity and the presence of non-toxic elements are important criteria for the development of materials for implant applications. Low modulus Ti alloys can be developed by designing beta-Ti alloys containing non-toxic alloying elements such as Nb and Zr. Actually, most of the metallic implants are produced with stainless steel (SS) because it has adequate bulk properties to be used as biomaterials for orthopedic or dental implants and is less expensive than Ti and its alloys, but it is less biocompatible than them. The coating of this SS implants with Ti alloy thin films may be one alternative to improve the biomaterial properties at a relatively low cost. Sputtering is a physical deposition technique that allows the formation of nanostructured thin films. Nanostructured surfaces are interesting when it comes to the bone/implant interface due to the fact that both the surface and the bone have nanoscale particle sizes and similar mechanical properties. TiNbZr thin films were deposited on both Si(111) and stainless steel (SS) substrates. The TiNbZr/Si(111) film was used as a model system, while the TiNbZr/SS film might improve the biocompatibility and extend the life time of stainless steel implants. The morphology, chemical composition, Young's modulus, and hardness of the films were analyzed by atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray spectroscopy (EDS), and nanoindentation. (C) 2014 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 09/17055-7 - Estudo de filmes finos de titânio, zircônio, nióbio e suas ligas
• Beneficiário: Pedro Augusto de Paula Nascente
• Modalidade de apoio: Auxílio à Pesquisa - Regular