Study of Electrochemical and Biological Characteristics of As-Cast Ti-Nb-Zr-Ta System Based on Its Microstructure

The quaternary Ti-Nb-Zr-Ta (TNZT) alloy was successfully cast-fabricated with the objective to be used in the medical field. Samples’ microstructure was compared to CP-Ti and Ti-6Al-4V (control samples) and related to corrosion, ion release and biological properties. As-cast TNZT was formed with lar...

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Bibliographic Details
Published in:Metals (Basel ) 2022-03, Vol.12 (3), p.476
Main Authors: Rossi, Mariana Correa, Ventura, Beatriz Navarro, Milián, Lara, Escuder, Angel Vicente, Amigó Borrás, Vicente
Format: Article
Language:English
Subjects:
Alloys
Alzheimer's disease
Biocompatibility
Biological properties
biomedical materials
Chemical composition
Chemical elements
Corrosion rate
Corrosion resistance
Dental implants
Dentin
Dentistry
Fluorides
Grain size
Integrated software
Metals
Microstructure
Modulus of elasticity
Niobium
Prostheses
Quaternary alloys
Sensors
Tantalum
Titanium base alloys
Toxicity
Ultrafines
Zirconium
β-Ti alloy
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Summary:The quaternary Ti-Nb-Zr-Ta (TNZT) alloy was successfully cast-fabricated with the objective to be used in the medical field. Samples’ microstructure was compared to CP-Ti and Ti-6Al-4V (control samples) and related to corrosion, ion release and biological properties. As-cast TNZT was formed with large β grain sizes (285 µm) compared to the ultrafine α grain sizes of CP-Ti (11 µm) and the α + β ultrafine grain sizes of 1.45 µm and 0.74 µm. Hardness and flexural elastic moduli (94 HV and 43 GPa) came close to the biological structures, such as dentin and enamel values. The ion release mechanism of as-cast TNZT was significantly lesser than CP-Ti and Ti-6Al-4V, which can be related to the difference in samples’ grain sizes and chemical compositions. However, the corrosion rate was higher than for the control samples; this way offers corrosion properties inferior with respect to the properties obtained in the reference materials. Biological assays demonstrated that the two-cell (hDPSCs and MG-63) lineage studied presented good adhesion and capability to differentiate in bone cells on the as-cast TNZT surface, and no cytotoxicity effects were found. Details and reasons based on samples’ microstructure are discussed.
ISSN:2075-4701
2075-4701
DOI:10.3390/met12030476