Investigations into Ti-Based Metallic Alloys for Biomedical Purposes

Peter, Ildiko

doi:10.3390/met11101626

Cited by 9 publications

(12 citation statements)

References 39 publications

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“…Depending on the processing route, containing both cold-deformation and thermal treatments, the elastic modulus of TNTZ or other similar alloys (TZN, TNZ) was drastically influenced [36][37][38][39][40][41][42][43][44]. If phase changes occur during cold-deformation and/or thermal treatments, the β-Ti/α"-Ti phase proportion and characteristics are strongly influenced as-well [38].…”

Section: Introductionmentioning

confidence: 99%

Effects of Cold Rolling Deformation and Solution Treatment on Microstructural, Mechanical, and Corrosion Properties of a Biocompatible Ti-Nb-Ta-Zr Alloy

Angelescu

Dan

Ungureanu

et al. 2022

Metals

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One of the most important requirements for a metallic biomaterial is the mechanical biocompatibility, which means excellent mechanical properties—high strength and fatigue strength, but low elastic modulus, to be mechanically harmonized with hard tissues. In order to improve the mechanical and biocompatible performance of the Ti-25.5Nb-4.5Ta-8.0Zr wt% alloy, the influence of cold plastic deformation and solution treatment on its properties were investigated. The Ti-25.5Nb-4.5Ta-8.0Zr wt% alloy was fabricated by melting in a cold crucible furnace (in levitation) and then subjected to several treatment schemes, which include cold rolling and different solution treatments. Microstructural and mechanical characteristics of specimens in as-cast and thermo-mechanically processed condition were determined by SEM microscopy and tensile testing, for different structural states: initial as-cast/as-received, cold rolled and solution treated at different temperatures (800, 900, and 1000 °C) and durations (5, 10, 15, and 20 min), with water quenching. It was concluded that both cold rolling and solution treatment have important positive effects on structural and mechanical properties of the biomaterial, increasing mechanical strength and decreasing the elastic modulus. Samples in different structural states were also corrosion tested and the results provided important information on determining the optimal processing scheme to obtain a high-performance biomaterial. The final processing route chosen consists of a cold rolling deformation with a total deformation degree of 60%, followed by a solution heat treatment at 900 °C with maintenance duration of 5 min and water quenching. By applying this thermo-mechanical processing scheme, the Ti-25.5Nb-4.5Ta-8.0Zr wt% alloy showed an elastic modulus of 56 GPa (5% higher than in the as-cast state), an ultimate tensile strength of 1004 MPa (41.8% higher than in the as-cast state), a yield strength of 718 MPa (40.6% higher than in the as-cast state), and increased corrosion resistance (the corrosion rate decreased by 50% compared to the as-cast state).

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Section: Introductionmentioning

confidence: 99%

Effects of Cold Rolling Deformation and Solution Treatment on Microstructural, Mechanical, and Corrosion Properties of a Biocompatible Ti-Nb-Ta-Zr Alloy

Angelescu

Dan

Ungureanu

et al. 2022

Metals

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“…As innovation concerns, Zr, Zr-Nb, Zr-Ta and Zr-Mo based materials are interesting solutions, too. Zr goes to the similar group as Ti and reveals comparable behaviours [3]. The possibility to use Ta in TiNi shape memory alloy increase the biocompatibility of the bioalloy.…”

Section: Introductionmentioning

confidence: 75%

“…However, in this wide-ranging background, there is a growing inclination to explore and to obtain new material compositions and to employ them in medicine. To reduce the above mentioned difficulties, regarding the stress shielding effect, β-type Ti alloys development is proposed in [3]. The results acquired reveal an excellent opportunity to use such alloys for medical purpose, focalizing the application on bone replacement or even if in dentistry.…”

Section: Introductionmentioning

confidence: 99%

The Use of Materials for Dental Applications

Peter

Andone

Singhwal

et al. 2022

Acta Marisiensis. Seria Technologica

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Nowadays in our society modern science uses a wide range of materials to perform multiple functions. One of the fields in which biological, synthetic and hybrid materials have found various applications is related to the medical one. The variety of materials used in medicine adapts to specific requirements and applications, due to the wide range of physical, chemical and biological properties that these materials can guarantee. The present review paper offers a short review, based on the data available in the scientific literature, on the possibility of using materials for dental application.

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“…A full-ground plane was chosen on the backside to reduce the harmful backward radiations. It is highly recommended to encase the in-mouth antennas with a biocompatible material to improve their acceptability by surrounding tissues 34 , 35 . Here, the biocompatible polydimethylsiloxane (PDMS) encasing is chosen to protect the designed intraoral antenna from the body fluid (saliva) and improve the radiation efficiency of the in-mouth antenna.…”

Section: Methodsmentioning

confidence: 99%

Circularly polarized differential intra-oral antenna design validation and characterization for tongue drive system

Ahlawat

Kanaujia

Rambabu

et al. 2023

Sci Rep

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Assistive devices are becoming increasingly popular for physically disabled persons suffering tetraplegia and spinal cord injuries. Intraoral tongue drive system (iTDS) is one of the most feasible and non-invasive assistive technology (AT), which utilises the transferring and inferring of user intentions through different tongue gestures. Wireless transferring is of prime importance and requires a suitable design of the intra-oral antenna. In this paper, a compact circularly polarized differential intra-oral antenna is designed, and its performance is analysed within heterogeneous multilayer mouth and head models. It works at 2.4 GHz in the Industrial, Scientific, and Medical (ISM) band. The footprint of the differential antenna prototype is 0.271 λg$$\times$$ × 0.271 λg$$\times$$ × 0.015 λg. It is achieved using two pairs of spiral segments loaded in diagonal form near the edges of the central rotated square slot and a high dielectric constant substrate. Its spiral-slotted geometry further provides the desired swirling and miniaturization at the desired frequency band for both mouth scenarios. Additionally, corner triangular slits on the radiating patch assist in tuning the axial ratio (< 3 dB) in the desired ISM band. To validate the performance of the proposed in-mouth antenna, the measurement was carried out using the minced pork and the saline solution for closed and opened mouth cases, respectively. The measured − 10 dB impedance bandwidth and peak gain values in the minced pork are from 2.28 to 2.53 GHz (10.39%) and − 18.17 dBi, respectively, and in the saline solution, are from 2.3 to 2.54 GHz (9.92%) and − 15.47 dBi, respectively. Further, the specific absorption rate (SAR) is estimated, and the data communication link is computed with and without a balun loss. This confirms that the proposed differential intraoral antenna can establish direct interfacing at the RF front end of the intraoral tongue drive system.

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Investigations into Ti-Based Metallic Alloys for Biomedical Purposes

Cited by 9 publications

References 39 publications

Effects of Cold Rolling Deformation and Solution Treatment on Microstructural, Mechanical, and Corrosion Properties of a Biocompatible Ti-Nb-Ta-Zr Alloy

Effects of Cold Rolling Deformation and Solution Treatment on Microstructural, Mechanical, and Corrosion Properties of a Biocompatible Ti-Nb-Ta-Zr Alloy

The Use of Materials for Dental Applications

Circularly polarized differential intra-oral antenna design validation and characterization for tongue drive system

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