| Texto completo | |
| Autor(es): |
Rossi, Mariana Correa
[1]
;
Bayerlein, Daniel Leal
[2]
;
Gouvea, Eber de Santi
[1]
;
Haro Rodriguez, Montserrat Vicenta
[1]
;
Escuder, Angel Vicente
[1]
;
Borras, Vicente Amigo
[1]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Univ Politecn Valencia, Inst Tecnol Mat, Cami de Vera S-N, Valencia 46022 - Spain
[2] Inst Pesquisas Energet & Nucl, Ctr Ciencia & Tecnol Mat, Av Prof Almeida Prado 532 Cid, BR-05508901 Sao Paulo - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T; v. 10, p. 916-925, JAN-FEB 2021. |
| Citações Web of Science: | 1 |
| Resumo | |
It was investigated in order to better understand the relationship between the low presence of Mg in the Ti-Nb-Sn alloy in its mechanical and microstructural properties by the powder metallurgy technique for biomedical application. The blended powders with the nominal composition of Ti-34Nb-6Sn were obtained by milling at 200 rpm/40 min, compacted at 200 MPa. The sintering were carried out at 900 degrees C/2 h and at 1110 degrees C/2 h, followed by furnace cooling. The particle size was characterized by the dynamic image analyzer (DIA). The phases quantification and their microstructure were characterized by an X-ray diffractometer (XRD) and a scanning electron microscope (SEM). The porosity was characterized by the Archimedes method and also bi-dimensionally by the Image J software. The mechanical tests were performed by the impulse excitation (Sonelastic (R)) technique, in order to evaluate the elastic modulus (E) of the sintered materials and the hardness and resistance by the Rockwell method. The results indicated that the sintering at 1100 degrees C in the materials with Mg, still had particles of Nb not diffused. The microstructure was basically formed by two phases with the presence of Nb non-diffused in all conditions except at 1100 degrees C in the system without Mg. The beta phase % for systems without and with Mg at 900 degrees C was approximately 80% and 65%. At 1100 degrees C, 76% and 78%. The E and hardness were 31 GPa and 226 MPa at 900 degrees C; 49 GPa and 344 MPa at 1100 degrees C for materials with Mg. The O and N content increased approximately 1.3 times when adding Mg powder. (C) 2021 The Authors. Published by Elsevier B.V. (AU) | |
| Processo FAPESP: | 19/24237-6 - Influência dos elementos de liga Nb e Sn e Mg nas propriedades mecânicas do arcabouço Ti-34Nb-6Sn/Mg para aplicação biomédica |
| Beneficiário: | Mariana Correa Rossi |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado |