Solid-State Processing of CoCrMoNbTi High-Entropy Alloy for Biomedical Applications

High-entropy alloys (HEAs) gained interest in the field of biomedical applications due to their unique effects and to the combination of the properties of the constituent elements. In addition to the required property of biocompatibility, other requirements include properties such as mechanical resi...

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Bibliographic Details
Published in:Materials 2023-09, Vol.16 (19), p.6520
Main Authors: Bololoi, Alina Elena, Geambazu, Laura Elena, Antoniac, Iulian Vasile, Bololoi, Robert Viorel, Manea, Ciprian Alexandru, Cojocaru, Vasile Dănuţ, Pătroi, Delia
Format: Article
Language:English
Subjects:
Alloys
Biocompatibility
Biomedical engineering
Biomedical materials
Cell culture
Corrosion resistance
Cost effectiveness
Ductility
Entropy
Face centered cubic lattice
High entropy alloys
Mathematical analysis
Mechanical alloying
Mechanical properties
Metal powders
Molybdenum
Oxidation
Powder metallurgy
Powders
Process controls
Raw materials
Specialty metals industry
Technology application
Titanium alloys
Transplants & implants
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Summary:High-entropy alloys (HEAs) gained interest in the field of biomedical applications due to their unique effects and to the combination of the properties of the constituent elements. In addition to the required property of biocompatibility, other requirements include properties such as mechanical resistance, bioactivity, sterility, stability, cost effectiveness, etc. For this paper, a biocompatible high-entropy alloy, defined as bio-HEA by the literature, can be considered as an alternative to the market-available materials due to their superior properties. According to the calculation of the valence electron concentration, a majority of body-centered cubic (BCC) phases were expected, resulting in properties such as high strength and plasticity for the studied alloy, confirmed by the XRD analysis. The tetragonal (TVC) phase was also identified, indicating that the presence of face-centered cubic (FCC) phases in the alloyed materials resulted in high ductility. Microstructural and compositional analyses revealed refined and uniform metallic powder particles, with a homogeneous distribution of the elemental particles observed from the mapping analyses, indicating that alloying had occurred. The technological characterization of the high-entropy alloy-elaborated powder revealed the particle dimension reduction due to the welding and fracturing process that occurs during mechanical alloying, with a calculated average particle size of 45.12 µm.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma16196520