Characteristics of ceramic-like coatings obtained by plasma electrolyte oxidation on different Ti alloys

Autor(es)

Rossi, Mariana Correa ; dos Santos, Rafael Formenton ; Kuroda, Pedro Akira Bazaglia ; Afonso, Conrado Ramos Moreira

• Tipo de documento: Artigo Científico
• Fonte: BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO; v. 63, n. 1, p. 14-pg., 2024-02-26.

Resumo

Plasma electrolyte oxidation was used to modify the surface of different Ti alloys: c.p. Ti (alpha hcp structure), Ti-15Nb (alpha ' + beta structure) and Ti-33Nb-33Zr (stable beta cubic structure) and the influence of elements and microstructure in the TiO2-based ceramic layer formed as well as the surface properties was analyzed. The XRD patterns confirmed the presence of TiO2 (anatase and rutile) in the c.p. Ti. For Ti-15Nb (wt.%) indicated the presence the same oxides also of pentoxide niobium (Nb2O5). For Ti-33Nb-33Zr (wt.%) indicated just the presence of rutile as the stable oxide one at room temperature and dioxide zirconium (ZrO2). In addition, the formation of calcium carbonate CaCO3 and calcium phosphate Ca-3(PO4)(2) was detected in all 3 materials. The ceramic-like layer was more homogeneous for c.p. Ti and Ti-15Nb and more irregular hole like-pores for Ti-33Nb-33Zr. Bioactive ions used were detected in all alloys and the roughness for Ti-15Nb was higher compared to c.p. Ti. and Ti-33Nb-33Zr. The contact angle for the three samples was higher than 100 degrees. (AU)

• Processo FAPESP: 21/03865-9 - Influência de modificações superficiais na bioatividade e (tribo)corrosão de ligas beta de Ti-Nb-(Zr) de baixo módulo de elasticidade para aplicação como implantes
• Beneficiário: Mariana Correa Rossi
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 18/18293-8 - Ligas de titânio: transformações de fases e manufatura aditiva aplicadas na obtenção de materiais com gradientes funcionais
• Beneficiário: Rubens Caram Junior
• Modalidade de apoio: Auxílio à Pesquisa - Temático