| Texto completo | |
| Autor(es): |
Radi, Polyana Alves
;
Testoni, Giorgio Ernesto
;
Pessoa, Rodrigo Savio
;
Maciel, Homero Santiago
;
Rocha, Luis Augusto
;
Vieira, Lucia
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | SURFACE & COATINGS TECHNOLOGY; v. 349, p. 6-pg., 2018-09-15. |
| Resumo | |
Metallic materials are the most widely used for orthopedic applications and, their corrosion resistance is one of the main prerequisites for avoiding impairment of the material properties due to degradation. Ti-6A1-4V is one of the main medical titanium alloys. However, for permanent implant applications, this alloy may cause toxic effect due to release of vanadium and aluminum. Nanolaminates of alternatively ordered thin films of transition metal oxides with nanoscale thickness are known to have distinct properties of a single layer film. Atomic layer deposition (ALD) is a promising method for fabrication of thin sealing coatings for corrosion protection. These films can also be used as in vivo sensors to antedate the detection of diseases such as cancer, to inform the best treatments, and to understand the response to therapies. The ideal in vivo sensor should be non-toxic, biocompatible, stable, and very sensitive. In this work, TiO2/Al2O3 nanolaminate, Al2O3 and TiO2 thin films were deposited on Ti-6A1-4V substrates by using ALD and their structure, adhesion and tribocorrosion properties were analyzed. The tribocorrosion tests were performed in Ringer's solution. The coatings showed to protect the sample surface evidenced by the increase on the OCP both in static mode and in dynamic mode. The TiO2/Al2O3 nanolaminates presented lower friction coefficient. (AU) | |
| Processo FAPESP: | 08/05533-9 - Triboquímica Analítica: Estudo da Dependência dos Parâmetros Tribológicos com a Modificação Superficial em Filmes a Base de Carbono. |
| Beneficiário: | Polyana Alves Radi Gonçalves |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 03/13373-8 - Obtenção e caracterização de lubrificante sólido visando aplicação espacial |
| Beneficiário: | Lúcia Vieira |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |
| Processo FAPESP: | 11/50773-0 - Núcleo de excelência em física e aplicações de plasmas |
| Beneficiário: | Ricardo Magnus Osório Galvão |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 04/10856-0 - Caracterização de lubrificante sólido visando aplicação |
| Beneficiário: | Lúcia Vieira |
| Modalidade de apoio: | Bolsas no Brasil - Jovens Pesquisadores |