Review on effect of Ti-alloy processing techniques on surface-integrity for biomedical application

Kumar, S. P. Leo; Avinash, D.

doi:10.1080/10426914.2020.1748195

Cited by 35 publications

(11 citation statements)

References 175 publications

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“…Titanium (Ti) and its alloys are showing immense importance, especially in biomedical (orthopedic and dental implants) and aerospace applications, due to their unique features like low density, high specific strength, biocompatibility, and excellent corrosion resistance 1–5 . The formation of stable titanium oxide (TiO 2 ) over the Ti‐surface is considered the cause behind corrosion resistance and biocompatibility 6 .…”

Section: Introductionmentioning

confidence: 99%

Polyvinyl pyrrolidone (PVP) as an efficient and biocompatible binder for metal alloy processing: A case study with Ti‐20Zr‐11Nb‐3Sn

Sinha

Lim

Chothe

et al. 2022

J of Applied Polymer Sci

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Titanium (Ti) being a lightweight, biocompatible, and strong metal, immense attention is being paid to develop Ti-based different low-cost and efficient biomedical implants by employing additive manufacturing (AM) or 3D printing.Binder having abundant binding efficacy binds the alloying metal powders and maintains their stoichiometry and close attachment. However, in the case of Ti-alloy, the Ti, or other alloying metals, e.g., zirconium (Zr), because of their high reactivity with ambient moisture and oxygen, needs to be stabilized before the alloy formation. In this work, instead of using various nonbiocompatible thermoplastic and semi-crystalline polymers responsible for causing stress-induced defects in the final structure, the efficacy of a biocompatible amorphous polymer (i.e., polyvinyl pyrrolidone [PVP]) as a binder towards developing the Ti-alloy has been examined. PVP-bound alloying metal powders were found to be stable for 30 days (as per the XRD analysis) and exhibited a nearly similar composition to the experimental formula. Thermal debinding was examined for two temperatures, 600 and 1000 C, and compared with the help of SEM and XRD analyses. The better debinding (i.e., reduction of carbon content as per the EDX analysis) was found for the 1000 C debinding temperature.

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Section: Introductionmentioning

confidence: 99%

Polyvinyl pyrrolidone (PVP) as an efficient and biocompatible binder for metal alloy processing: A case study with Ti‐20Zr‐11Nb‐3Sn

Sinha

Lim

Chothe

et al. 2022

J of Applied Polymer Sci

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“…Titanium (Ti) and its alloys are used as materials for orthopedic and dental implants due to their high strength compared to polymeric materials and toughness compared to ceramic materials [1]. Ti has a modulus elasticity of 105 GPa, close to the human bone of 10-30 GPa [2]. The ideal material used for bone replacement must be biocompatible, initiate osteogenesis, simulate the mechanical properties of bone, and exhibit good corrosion resistance [3].…”

Section: Introductionmentioning

confidence: 99%

Optimizing parameter for electrophoretic deposition of hydroxyapatite coating with superior corrosion resistance on pure titanium

Rahmadani

Anawati

Gumelar³

et al. 2022

Mater. Res. Express

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Bioactive hydroxyapatite (HA) coating is applied on a commercially pure Ti by electrophoretic deposition (EPD). Optimizing the coating structure is necessary to obtain a stable layer and the best corrosion protection. The EPD was conducted at a constant voltage of 20, 30, and 40 V for 30 min in a HA/DMF (dimethylformamide) suspension. Uniform HA layers with a Ca/P ratio of 1.82 were successfully deposited on the Ti surface. The layers, which consisted of HA grains with the size of 1-5 μm, exhibited a gradual increase in thickness of 32, 50, and 60 μm with formation voltage. For the biomedical application, the suitable coating thickness was at least 50 μm. The high compaction of HA grains deposited at 30 V led to an order magnitude higher polarization resistance and ten times lower corrosion current density relative to the other specimens. The porous HA layer formed at 20 V, and the presence of cracks in the 40 V-coating led to a lower corrosion resistance relative to the 30-V coating. The 20 V- and 30 V-coatings remained intact and triggered the deposition of HA during immersion in simulated body fluid for 28 days, while the 40 V-coating dissolved into the solution. The optimum EPD voltage for depositing a stable HA coating with reasonable coating thickness and the best corrosion resistance was 30 V.

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“…Nevertheless, due to the complex extraction process of Ti6Al4V and difficulty in melting, the cost is high, and it is difficult to process with traditional methods. [22][23][24] The great advantage of AM is reducing the process chains, increasing the efficiency, and avoiding material waste during the process of producing near-net-shape components with complex geometries so that the costs is significantly reduced. [25][26][27] Thereby, many manufacturers process Ti6Al4V powder through SLM to make complex parts for aerospace and biomedical devices.…”

Section: Introductionmentioning

confidence: 99%

Laser polishing of additive manufactured Ti6Al4V alloy: a review

Zuo

2021

Opt. Eng.

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Additive manufactured Ti6Al4V alloy has excellent comprehensive properties and has broad application prospects in the aerospace, biomedicine, and other fields. However, the fabricated components are too rough to use directly. So, a corresponding postprocess is needed urgently. The conventional finishing process cannot meet the requirements of green and efficient processing because of its time consumption, environmental pollution, and low productivity. Laser polishing, as a highly efficient and noncontact post-treatment technology, has attracted more and more attention in the polishing of additive manufactured Ti6Al4V alloy. The research of laser polishing of Ti6Al4V alloy in recent years has expatiated and includes laser polishing mechanisms, surface roughness and morphology, microstructure, mechanical properties, and finite element simulation analysis during laser polishing. Furthermore, the existing challenges of laser-polished Ti6Al4V alloy are summarized, and future development directions are proposed.

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Review on effect of Ti-alloy processing techniques on surface-integrity for biomedical application

Cited by 35 publications

References 175 publications

Polyvinyl pyrrolidone (PVP) as an efficient and biocompatible binder for metal alloy processing: A case study with Ti‐20Zr‐11Nb‐3Sn

Polyvinyl pyrrolidone (PVP) as an efficient and biocompatible binder for metal alloy processing: A case study with Ti‐20Zr‐11Nb‐3Sn

Optimizing parameter for electrophoretic deposition of hydroxyapatite coating with superior corrosion resistance on pure titanium

Laser polishing of additive manufactured Ti6Al4V alloy: a review

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