Electrochemical Properties of HA Coated Titanium Dioxide Nanotubes

Kang, Kwan Hyoung; Zakiyuddin, Ahmad; Lee, Kwang-Min

doi:10.1166/jnn.2016.11988

Cited by 4 publications

(3 citation statements)

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“…The anodized TiO 2 layer enhances the corrosion resistance by being as a barrier to embed the releasing of metallic ions. This is also confirmed by Kang et al [131] who reported an enhancement in electrochemical properties by lowering in corrosion current density and development in corrosion resistance after anodizing the surface of cp-Ti coated by sol-gel hydroxyapatite.…”

Section: Tio 2 Interlayer Prepared By Anodizationsupporting

confidence: 85%

Sol-Gel Derived Hydroxyapatite Coatings for Titanium Implants: A Review

et al. 2020

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With the growing demands for bone implant therapy, titanium (Ti) and its alloys are considered as appropriate choices for the load-bearing bone implant substitutes. However, the interaction of bare Ti-based implants with the tissues is critical to the success of the implants for long-term stability. Thus, surface modifications of Ti implants with biocompatible hydroxyapatite (HAp) coatings before implantation is important and gained interest. Sol-gel is a potential technique for deposition the biocompatible HAp and has many advantages over other methods. Therefore, this review strives to provide widespread overview on the recent development of sol-gel HAp deposition on Ti. This study shows that sol-gel technique was able to produce uniform and homogenous HAp coatings and identified the role of surface pretreatment of Ti substrate, optimizing the sol-gel parameters, substitution, and reinforcement of HAp on improving the coating properties. Critical factors that influence on the characteristics of the deposited sol-gel HAp films as corrosion resistance, adhesion to substrate, bioactivity, morphological, and structural properties are discussed. The review also highlights the critical issues, the most significant challenges, and the areas requiring further research.

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Section: Tio 2 Interlayer Prepared By Anodizationsupporting

confidence: 85%

Sol-Gel Derived Hydroxyapatite Coatings for Titanium Implants: A Review

et al. 2020

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“…Although, this native TiO2 reduce the corrosion of Ti and have ability to promote biocompatibility, this one can be damaged easily by mechanical stress [37]. Therefore, there is a need to applied proper surface modification of titanium surface because it leads to an increase in its roughness, thereby improving the adhesion of the bioactive ceramic coating to the implanted titanium surface [38]. Most titanium implants are treated with bioactive ceramic material in order to improve biocompatibility, osteointegration and coating adhesion on the substrate [38][39][40].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Anaphoretical/oxidative approach to the in-situ synthesis of adherent hydroxyapatite/titanium oxide composite coatings on titanium

Pavlović

Eraković

Pavlović

et al. 2019

Surface and Coatings Technology

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In-situ synthesis of HAp/TiO2 coating on titanium was performed via anaphoretic deposition of HAp and simultaneous anodization of Ti to produce highly adherent and strengthened composite coating. The prepared coatings were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray difraction and electron dispersive spectroscopy. HAp on anodized titanium was prepared at constant voltage of 60 V and deposition time of 45 s, which provided uniform and adherent HAp/TiO2 composite coating on Ti. Since smaller size of HAp crystals within highly porous coating structures is of improved binding ability to various biomolecules, our coating is expected to be of excellent coverage and compactness. The obtained coating can be good candidate for bone implants due to reduced brittleness and improved adhesion.

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“…Taking into account these considerations, there is a requirement for suitable surface modification of titanium and its alloys that will result in improved biocompatibility and osteointegration, with simultaneous reduction of strong bacterial seeding on the implant surface. ,− Generally, titanium implants are treated with bioactive materials, in most cases, bioactive ceramic materials, in order to improve implant biocompatibility and osteointegration. − …”

Section: Introductionmentioning

confidence: 99%

Anodizing/Anaphoretic Electrodeposition of Nano-Calcium Phosphate/Chitosan Lactate Multifunctional Coatings on Titanium with Advanced Corrosion Resistance, Bioactivity, and Antibacterial Properties

Pavlović

Stanojević²,

Mihailović

et al. 2021

ACS Biomater. Sci. Eng.

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The aim of this work was to investigate corrosion resistivity, bioactivity, and antibacterial activity of novel nano-amorphous calcium phosphate (ACP) potentially multifunctional composite coatings with and without chitosan oligosaccharide lactate (ChOL), ACP + ChOL/TiO2 and ACP/TiO2 ACP + ChOL/TiO2, respectively, on the titanium substrate. The coatings were obtained by new single-step in situ anodization of the substrate to generate TiO2 and the anaphoretic electrodeposition process of ACP and ChOL. The obtained coatings were around 300 ± 15 μm thick and consisted of two phases, namely, TiO2 and hybrid composite phases. Both ACP/TiO2 and ACP + ChOL/TiO2 have improved corrosion stability, whereas the ACP + ChOL/TiO2 coating showed better corrosion stability. It was shown that at the very start of the deposition process, the formation of the ChOL/TiO2 layer takes place predominantly, which is followed by the inclusion of ChOL into ACP with simultaneous growth of TiO2. This deposition mechanism resulted in the formation of strongly bonded uniform stable coating with high corrosion resistance. In vitro bioactivity was investigated by immersion of the samples in simulated body fluid (SBF). There is in-bone-like apatite formation on both ACP/TiO2 and ACP + ChOL/TiO2 surfaces upon immersion into SBF, which was proven by X-ray diffraction and Fourier transform infrared spectroscopy. While ACP/TiO2 shows no antibacterial activity, ACP + ChOL/TiO2 samples exhibited three- to fourfold decreases in the number of Staphylococcus aureus and Pseudomonas aeruginosa, respectively, after 420 min. The probable mechanism is binding ChOL with the bacterial cell wall, inhibiting its growth, altering the permeability of the cell membrane, and leading to bacterial death.

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Electrochemical Properties of HA Coated Titanium Dioxide Nanotubes

Cited by 4 publications

References 0 publications

Sol-Gel Derived Hydroxyapatite Coatings for Titanium Implants: A Review

Sol-Gel Derived Hydroxyapatite Coatings for Titanium Implants: A Review

Anaphoretical/oxidative approach to the in-situ synthesis of adherent hydroxyapatite/titanium oxide composite coatings on titanium

Anodizing/Anaphoretic Electrodeposition of Nano-Calcium Phosphate/Chitosan Lactate Multifunctional Coatings on Titanium with Advanced Corrosion Resistance, Bioactivity, and Antibacterial Properties

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