Bulk and surface design of MAO-treated Ti-15Zr-15Mo-Ag alloys for potential use as biofunctional implants

Autor(es)

Torrento, J. E. ^[1] ; Grandini, C. R. ^{[2, 1]} ; Sousa, T. S. P. ^[2] ; Rocha, L. A. ^[2] ; Goncalves, T. M. ^[3] ; Sottovia, L. ^[3] ; Rangel, E. C. ^[3] ; Cruz, N. C. ^[3] ; Correa, D. R. N. ^{[2, 1, 4]}

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Lab Anelasticidade & Biomat, UNESP, BR-17033360 Bauru, SP - Brazil

^[2] IBTN Br Brazilian Branch Inst Biomat Tribocorros, BR-17033360 Bauru, SP - Brazil

^[3] Univ Estadual Paulista, Lab Plasmas Tecnol, UNESP, BR-18087180 Sorocaba, SP - Brazil

^[4] IFSP Fed Inst Educ Sci & Technol, Grp Pesquisa Mat Met Avancados, BR-18095410 Sorocaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Materials Letters; v. 269, JUN 15 2020.
• Citações Web of Science: 0

Resumo

This study investigated the effect of silver addition and micro-arc oxidation (MAO) treatment on the microstructure, selected mechanical properties, and surface characteristics of the Ti-15Zr-15Mo (wt%) alloy. The ingots were produced by argon arc-melting and subsequently subjected to thermomechanical treatments and surface modification. Phase composition and microstructure of the samples exhibited only the b phase. The samples possessed better mechanical biocompatibility (in terms of Vickers microhardness and Young's modulus) than some commercial biomedical materials. MAO-treated surfaces exhibited a porous morphology and were mostly covered by TiO2 (anatase). Bioactive elements (Ca, P, and Mg) were incorporated into the oxide layer and inserted an apatite forming ability in the samples. These results indicated the great potential of the samples for use as biomedical implants. (C) 2020 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 16/25272-1 - Desenvolvimento da liga Ti-15Zr-15Mo-1Ag para aplicações como implantes metálicos biofuncionais
• Beneficiário: Jhuliene Elen Muro Torrento
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 15/00851-6 - Biofuncionalização da liga Ti-15Zr com a adição de molibdênio e diferentes modificações de superfície
• Beneficiário: Diego Rafael Nespeque Correa
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado