Influence of Porosity on the Elastic Modulus of Ti-Zr-Ta-Nb Foams with a Low Nb Content
Por:
Aguilar C., Arancibia M., Alfonso I., Sancy M., Tello K., Salinas V., De Las Cuevas F.
Publicada:
1 feb 2019
Categoría:
Materials science (miscellaneous)
Resumen:
The development of titanium foams with a low elastic modulus has
increased their scientific and technological relevance due to the
evident need to avoid stress shielding problems. In this work, we
studied the synthesis and characterization of Ti-13Zr-13Ta-3Nb (wt.%)
alloy foams which present high potential for biomedical applications. A
Ti-Nb-Ta-Zr mixture was produced by mechanical alloying using a
planetary mill. Ti alloy foams were obtained using NaCl as a
space-holder (40, 50, and 60 v/v %) that was mixed with the metallic
powders and compacted under 420 MPa stress. NaCl particles were removed
from the green compacts by submerging samples in distilled water at 60
degrees C. The green compacts were sintered at 1300 degrees C for 3 h in
Ar atmosphere. Powders and foams were characterized by SEM and optical
microscopy. The results showed that Ti-based foams with a tailored
heterogeneous pore distribution can be obtained using the space holder
method. The elastic modulus (E) of foams was estimated and measured
between 5 and 25 GPa using theoretical and finite element analysis (FEA)
models which are close to the E values measured experimentally. The
results showed that foams with 50% and 60% porosity are potential bone
replacement materials because their E value is closer to the E value of
human bone.
Filiaciones:
Aguilar C.:
Departamento de Ingeniería Metalúrgica y Materiales, Universidad Técnica Federico Santa María, Av. España 1680, Valparaíso, C.P. 2390123, Chile
Univ Tecn Federico Santa Maria, Dept Ingn Met & Mat, Av Espana 1680, Valparaiso 2390123, Chile
Arancibia M.:
Departamento de Ingeniería Metalúrgica y Materiales, Universidad Técnica Federico Santa María, Av. España 1680, Valparaíso, C.P. 2390123, Chile
Univ Tecn Federico Santa Maria, Dept Ingn Met & Mat, Av Espana 1680, Valparaiso 2390123, Chile
Alfonso I.:
Instituto de Investigaciones en Materiales, Unidad Morelia, Universidad Nacional Autónoma de México, Campus Morelia UNAM. Antigua Carretera a Pátzcuaro No. 8701, Col. Ex-Hacienda de San José de la Huerta, Morelia, Michoacán C.P. 58190, Mexico
Univ Nacl Autonoma Mexico, Unidad Morelia, Inst Invest Mat, Campus Morelia UNAM Antigua Carretera Patzcuaro 8, Morelia 58190, Michoacan, Mexico
Sancy M.:
Escuela de Construcción Civil, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Santiago, C.P. 8320000, Chile
Pontificia Univ Catolica Chile, Escuela Construcc Civil, Ave Vicuna Mackenna 4860, Santiago 8320000, Chile
Tello K.:
Departamento de Ingeniería Metalúrgica y Materiales, Universidad Técnica Federico Santa María, Av. España 1680, Valparaíso, C.P. 2390123, Chile
Univ Tecn Federico Santa Maria, Dept Ingn Met & Mat, Av Espana 1680, Valparaiso 2390123, Chile
Salinas V.:
Núcleo de Matemáticas, Física y Estadística, Facultad de Estudios Interdisciplinarios, Universidad Mayor, Manuel Montt 318, Providencia, C.P. 7500628, Chile
Univ Mayor, Fac Estudios Interdisciplinarios, Nucleo Matemat Fis & Estadist, Manuel Montt 318, Providencia 7500628, Chile
De Las Cuevas F.:
Departamento de Física, Universidad Pública de Navarra, Campús de Arrosadua, Pamplona, C.P. 31006, Spain
Univ Publ Navarra, Dept Fis, Campus Arrosadua, Pamplona 31006, Spain
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