Development and characterization of a new predominantly β Ti-15Mo-5In alloy for biomedical applications

Autor(es)

Romero-Resendiz, L. ; Rossi, M. C. ; Segui-Esquembre, C. ; Amigo-Borras, V.

• Tipo de documento: Artigo Científico
• Fonte: Journal of Materials Science; v. N/A, p. 17-pg., 2023-10-28.

Resumo

A new Ti-Mo-In alloy was designed for biomedical implant applications and produced by powder metallurgy. Mechanical properties, ion release, and electrochemical assessments were conducted to uncover its biomaterial feasibility. The Ti-15Mo-5In alloy consisted of a nearly equiaxed and micrometric beta matrix with acicular alpha and fine dispersed alpha '' phases. Mo and In chosen contents encouraged flexural strength (0.59 GPa) and hardness (3.9 GPa) beyond the values for human bone in the literature. As expected from the predominantly beta microstructure, a medium value of elastic modulus (80 GPa) was obtained. The ion Ti (0.019 mu gL(-1) cm(-2) h(-1)), Mo (0.622 mu gL(-1) cm(-2) h(-1)), and In (0.001 mu gL(-1) cm(-2) h(-1)) released concentrations were below harmful concentrations to human health. Corrosion rates during immersion and electrochemical tests (0.524 and 0.1 mu m year(-1), respectively) were lower than those reported for various implant materials. The Ti-15Mo-5In alloy is a feasible option for orthopedic and dental implants. (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