Fabrication of Nano-Structured HA/CNT Coatings on Ti6Al4V by Electrophoretic Deposition for Biomedical Applications

Zhang, Bokai; Kwok, Chi Tat; Cheng, F. T.; Man, Hau Chung

doi:10.1166/jnn.2011.3939

Cited by 27 publications

(11 citation statements)

References 3 publications

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“…It was obvious that hardystonite coating established by electrophoretic method was a crack‐less continuous coating. It was mentioned in other studies that such coating should provide high corrosion resistance and proper biocompatibility [40]. EDX spectra of the coated bioceramic are exposed in Fig.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterisation of nanostructured hardystonite coating on stainless steel for biomedical application

Bagherpour

Naghib

Yaghtin

2018

IET nanobiotechnol.

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Here, nanostructured hardystonite bioceramic (CaZnSiO) was synthesised from tetraethyl orthosilicate, zinc nitrate hexahydrate, and calcium nitrate tetrahydrate via sol-gel method, dried at 60-120°C, and finally calcinated at 1300°C. X-ray diffraction (XRD) analysis confirmed the formation of hardystonite bioceramic. Afterwards, electrophoretic method was utilised to coat the hardystonite ceramic on 316L stainless steel (SS). Methanol solution was used as suspension solvent. The best deposition procedure was carried out by electrophoretic device in the voltage of 50 V for 5 min. XRD analysis was employed for phase characterisation and scanning electron microscopy was utilised for microstructural and morphological characterisations of the coatings. Chemical composition of the coating was evaluated by energy-dispersive X-ray spectroscopy. The hardystonite coating improved the corrosion resistance of the substrate, so the corrosion current density in the coated samples was less than the uncoated ones (nine times). In order to assess the bioactivity of the coating, simulated body fluid was used. The main results of the coated sample bioactivity demonstrated that the nanostructured hardystonite coating could amend the in vitro SS bioactivity. Therefore, SS coated with nanostructured hardystonite may be a promising candidate to be applied as bioactive hard tissue implants.

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Section: Resultsmentioning

confidence: 99%

Synthesis and characterisation of nanostructured hardystonite coating on stainless steel for biomedical application

Bagherpour

Naghib

Yaghtin

2018

IET nanobiotechnol.

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“…These results proved that the oxidation of Ti substrate improved the attachment of HA to metal substrates, which was in agreement with the findings of Hautaniemi et al [ 23 ]. The CNTs also helped prevent the HA-CNT coating from peeling off by acting as a reinforcement network [ 24 ].…”

Section: Resultsmentioning

confidence: 99%

Sol-Gel-Derived Hydroxyapatite-Carbon Nanotube/Titania Coatings on Titanium Substrates

Lou

Wang

et al. 2012

IJMS

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In this paper, hydroxyapatite-carbon nanotube/titania (HA-CNT/TiO2) double layer coatings were successfully developed on titanium (Ti) substrates intended for biomedical applications. A TiO2 coating was firstly developed by anodization to improve bonding between HA and Ti, and then the layer of HA and CNTs was coated on the surface by the sol-gel process to improve the biocompatibility and mechanical properties of Ti. The surfaces of double layer coatings were uniform and crack-free with a thickness of about 7 μm. The bonding strength of the HA-CNT/TiO2 coating was higher than that of the pure HA and HA-CNT coatings. Additionally, in vitro cell experiments showed that CNTs promoted the adhesion of preosteoblasts on the HA-CNT/TiO2 double layer coatings. These unique surfaces combined with the osteoconductive properties of HA exhibited the excellent mechanical properties of CNTs. Therefore, the developed HA-CNT/TiO2 coatings on Ti substrates might be a promising material for bone replacement.

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“…In an in vitro study, Pardun et al synthesized a YSZ/HA coating by wet powder spraying (WPS) using a double action airbrush spray. Although WPS shows versatility in coating curved surfaces with different thickness, the long-term stability of these coatings has not been confirmed [ 55 , 56 ].…”

Section: Surface Modifications Aiming At Improved Biological Responsesmentioning

confidence: 99%

Oral Tissue Interactions and Cellular Response to Zirconia Implant-Prosthetic Components: A Critical Review

et al. 2021

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Background: Dental components manufactured with zirconia (ZrO2) represent a significant percentage of the implant prosthetic market in dentistry. However, during the last few years, we have observed robust clinical and pre-clinical scientific investigations on zirconia both as a prosthetic and an implantable material. At the same time, we have witnessed consistent technical and manufacturing updates with regards to the applications of zirconia which appear to gradually clarify points which until recently were not well understood. Methods: This critical review evaluated the “state of the art” in relation to applications of this biomaterial in dental components and its interactions with oral tissues. Results: The physico-chemical and structural properties as well as the current surface treatment methodologies for ZrO2 were explored. A critical investigation of the cellular response to this biomaterial was completed and the clinical implications discussed. Finally, surface treatments of ZrO2 demonstrate that excellent osseointegration is possible and provide encouraging prospects for rapid bone adhesion. Furthermore, sophisticated surface treatment techniques and technologies are providing impressive oral soft tissue cell responses thus leading to superior biological seal. Conclusions: Dental devices manufactured from ZrO2 are structurally and chemically stable with biocompatibility levels allowing for safe and long-term function in the oral environment.

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Fabrication of Nano-Structured HA/CNT Coatings on Ti6Al4V by Electrophoretic Deposition for Biomedical Applications

Cited by 27 publications

References 3 publications

Synthesis and characterisation of nanostructured hardystonite coating on stainless steel for biomedical application

Synthesis and characterisation of nanostructured hardystonite coating on stainless steel for biomedical application

Sol-Gel-Derived Hydroxyapatite-Carbon Nanotube/Titania Coatings on Titanium Substrates

Oral Tissue Interactions and Cellular Response to Zirconia Implant-Prosthetic Components: A Critical Review

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