Influence of the substitutional solute on the mechanical properties of Ti-Nb binary alloys for biomedical use

Autor(es)

Luciano Monteiro da Silva ^[1] ; Ana Paula Rosifini Alves Claro ^[2] ; Marília Afonso Rabelo Buzalaf ^[3] ; Carlos Roberto Grandini ^[4]

Afiliação do(s) autor(es)

^[1] Univ. Estadual Paulista, Laboratório. Laboratório de Anelasticidade e Biomateriais - Brasil

^[2] Univ. Estadual Paulista, Faculdade de Engenharia. Departamento de Materiais e Tecnologia - Brasil

^[3] Universidade de São Paulo. Faculdade de Odontologia. Departamento de Ciências Biológicas - Brasil

^[4] Univ. Estadual Paulista, Laboratório. Laboratório de Anelasticidade e Biomateriais - Brasil

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 15, n. 3, p. 355-358, 2012-04-05.

Resumo

Titanium alloys are widely used in the manufacture of biomedical implants because they possess an excellent combination of physical properties and outstanding biocompatibility. Today, the most widely used alloy is Ti-6Al-4V, but some studies have reported adverse effects with the long-term presence of Al and V in the body, without mentioning that the elasticity modulus value of this alloy is far superior to the bone. Thus, there is a need to develop new Ti-based alloys without Al and V that have a lower modulus, greater biocompatibility, and similar mechanical strength. In this paper, we investigated the effect of Nb as a substitutional solute on the mechanical properties of Ti-Nb alloys, prepared in an arc-melting furnace and characterized by density, X-ray diffraction, optical microscopy, hardness and elasticity modulus measurements. The X-ray and microscopy measurements show a predominance of the α phase. The microhardness values showed a tendency to increase with the concentration of niobium in the alloy. Regarding the elasticity modulus, it was observed a nonlinear behavior with respect to the concentration of niobium. This behavior is associated with the presence of the α phase. (AU)

• Processo FAPESP: 09/16731-9 - Efeito de elementos intersticiais nas propriedades mecânicas, corrosão e biocompatibilidade de ligas Ti-Nb
• Beneficiário: Luciano Monteiro da Silva
• Modalidade de apoio: Bolsas no Brasil - Doutorado