Progress in Biomedical Metallic Materials and Surfaces

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Biobased and Biodegradable Metals".

Deadline for manuscript submissions: 25 March 2025 | Viewed by 1212

Special Issue Editors


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Guest Editor
Centre for MicroElectroMechanical Systems, CMEMS-UMinho, Guimaraes, Portugal
Interests: biomedical alloys; mechanical behavior; laser structuring; metal matrix composites; noble alloys; bioceramics; functionally graded materials behavior
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Guest Editor
Departamento de Ingeniería Metalúrgica y Materiales, Universidad Técnica Federico Santa María, Valparaíso C.P. 2390123, Chile
Interests: Ti-based alloys; thermodynamics; powder metallurgy; X-ray diffraction profile analysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The field of biomedical materials and surface engineering continues to progress, driven by the ever-increasing demand for materials that meet and exceed modern medical applications' requirements. Innovations in developing and refining these materials are important, as they directly influence the efficacy, durability, and biocompatibility of medical devices and implants. The scope of this Special Issue includes a broad range of topics within this dynamic field, with a particular emphasis on the latest advances in material design, surface modifications, and characterization techniques.

Biomedical materials based on metals are constantly evolving to address the complex challenges the human body presents. These materials are subjected to rigorous testing to ensure they can withstand the mechanical and chemical stresses of the biological environment. Surface engineering plays a critical role in enhancing the performance of these materials, providing improved wear resistance, reduced friction, and enhanced osseointegration, among other benefits. Integrating advanced surface modification techniques, such as coatings, texturing, and functionalization, has opened new avenues for creating tailored surfaces that interact more effectively with biological tissues.

In this Special Issue, we invite contributions that explore novel approaches to developing biomedical metallic materials and surface engineering. We are particularly interested in studies that investigate the relationship between material properties and their biological interactions, as well as those that demonstrate promising applications in the human body. Research on innovative fabrication methods that enable the production of customized solutions is also highly encouraged.

Prof. Dr. Bruno Alexandre Pacheco de Castro Henriques
Prof. Dr. Claudio Aguilar
Guest Editors

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Keywords

  • metals
  • biomedical metallic materials
  • surface engineering
  • surface modification
  • functionalization
  • mechanical properties, biological response
  • biocompatibility
  • osseointegration
  • medical implants and prostheses

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Published Papers (1 paper)

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Research

25 pages, 13336 KiB  
Article
Synthesis and Characterization of Ti-13Ta-6Sn Foams Produced Using Mechanical Alloying, the Space Holder Method and Plasma-Assisted Sintering
by Francisco Cavilha Neto, Vagner Kretiska Medeiros, Vicente Salinas-Barrera, Edgar Pio, Claudio Aguilar, Bruno Borges Ramos, Aloísio Nelmo Klein, Bruno Henriques and Cristiano Binder
Metals 2024, 14(10), 1145; https://doi.org/10.3390/met14101145 - 8 Oct 2024
Viewed by 1071
Abstract
Highly porous titanium foams are great candidates for replacing bone structures with a low elastic modulus owing to their ability to avoid the stress shielding effect. However, the production of highly porous foams (>70 vol.%) with well-distributed, stable, and predictable porous architectures using [...] Read more.
Highly porous titanium foams are great candidates for replacing bone structures with a low elastic modulus owing to their ability to avoid the stress shielding effect. However, the production of highly porous foams (>70 vol.%) with well-distributed, stable, and predictable porous architectures using powder compaction and space holders is challenging. In this study, pure titanium powder and mechanically alloyed Ti-13Ta-6Sn were mixed with 50, 70, and 80 vol.% KCl powders as a space holder, cold-compacted, and sintered in a plasma-assisted sintering reactor to produce highly porous foams. The space holder was completely removed using heat and plasma species collisions prior to sintering. A Ti-13Ta-6Sn alloy powder with α, β, and metastable FCC-γ phases was synthesized. The characteristics of the alloyed powder, mixing step, and the resulting sintered samples were compared to those of CP-Ti. After sintering, the alloy exhibited α and β phases and a reduced elastic modulus. Foams with an elastic modulus in the range of the cortical and trabecular bones were obtained. The results showed the effects of the space holder volume fractions on the volume fraction, size, distribution, interconnectivity, and shape of the pores. The Ti-13Ta-6Sn foams exhibited a uniform open-celled porous architecture, lower elastic modulus, higher yield strength, and higher passivation resistance than CP-Ti. Ti-13Ta-6Sn exhibited a nontoxic effect for the mouse fibroblast cell line. Full article
(This article belongs to the Special Issue Progress in Biomedical Metallic Materials and Surfaces)
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