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Open AccessArticle

Processing and Characterization of Bilayer Materials by Solid State Sintering for Orthopedic Applications

1
Tecnológico Nacional de México/ITMorelia, Av. Tecnológico # 1500, Colonia Lomas de Santiaguito, Morelia C.P. 58120, Mexico
2
INICIT, Universidad Michoacana de San Nicolás de Hidalgo, Fco. J. Mujica S/N, Morelia C.P. 58060, Mexico
3
Centro de Geociencias, Universidad Nacional Autónoma de México, Blvd. Juriquilla No. 3001, Querétaro C.P. 76230, Mexico
*
Author to whom correspondence should be addressed.
Metals 2021, 11(2), 207; https://doi.org/10.3390/met11020207
Received: 31 December 2020 / Revised: 18 January 2021 / Accepted: 19 January 2021 / Published: 23 January 2021
A new processing route is proposed to produce graded porous materials by placing particles of Ti6Al4V with different sizes in different configurations to obtain bilayer samples that can be used as bone implants. The sintering behavior is studied by dilatometry and the effect of the layers’ configuration is established. To determine pore features, SEM and computed microtomography were used. Permeability is evaluated by numerical simulations in the 3D real microstructures and the mechanical properties are evaluated by compression tests. The results show that a graded porosity is obtained as a function of the size of the particle used. The mechanical anisotropy due to the pore size distribution and the sintering kinetics, can be changed by the particle layer arrangements. The Young modulus and yield stress depend on the relative density of the samples and can be roughly predicted by a power law, considering the layers’ configuration on the compression behavior. Permeability is intimately related to the median pore size that leads to anisotropy due to the layers’ configuration with smaller and coarser particles. It is concluded that the proposed processing route can produce materials with specific and graded characteristics, with the radial configuration being the most promising for biomedical applications. View Full-Text
Keywords: Functional Graded Materials; sintering; porosity; permeability; mechanical properties Functional Graded Materials; sintering; porosity; permeability; mechanical properties
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MDPI and ACS Style

Téllez-Martínez, J.S.; Olmos, L.; Solorio-García, V.M.; Vergara-Hernández, H.J.; Chávez, J.; Arteaga, D. Processing and Characterization of Bilayer Materials by Solid State Sintering for Orthopedic Applications. Metals 2021, 11, 207. https://doi.org/10.3390/met11020207

AMA Style

Téllez-Martínez JS, Olmos L, Solorio-García VM, Vergara-Hernández HJ, Chávez J, Arteaga D. Processing and Characterization of Bilayer Materials by Solid State Sintering for Orthopedic Applications. Metals. 2021; 11(2):207. https://doi.org/10.3390/met11020207

Chicago/Turabian Style

Téllez-Martínez, Jorge S.; Olmos, Luis; Solorio-García, Víctor M.; Vergara-Hernández, Héctor J.; Chávez, Jorge; Arteaga, Dante. 2021. "Processing and Characterization of Bilayer Materials by Solid State Sintering for Orthopedic Applications" Metals 11, no. 2: 207. https://doi.org/10.3390/met11020207

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