Synthesis and properties of hydroxyapatite-containing porous titania coating on ultrafine-grained titanium by micro-arc oxidation

Yao, Zaiqi; Ivanisenko, Yulia; Diemant, Thomas; Caron, Arnaud; Chuvilin, Andrey; Jiang, Jiechao; Valiev, Ruslan Z.; Qi, Min; Fecht, Hans Jörg

doi:10.1016/j.actbio.2009.12.053

Cited by 178 publications

(107 citation statements)

References 48 publications

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“…After seven days of immersion in the SBF solution, the intensity of the related spectra to the amorphous CaP components increased in the corrosion products of the coated samples compared to those of the uncoated nanocomposite ( Figure 13). Furthermore, the O 1s spectrum at~531 eV can arise due to hydroxyl (−OH), carbonate (CO 3 ) 2− , and/or phosphate (PO 4 3− ) groups [70,71].…”

Section: Characterization and Microstructure Of Immersed Samples In Smentioning

confidence: 99%

Biodegradable Mg/HA/TiO2 Nanocomposites Coated with MgO and Si/MgO for Orthopedic Applications: A Study on the Corrosion, Surface Characterization, and Biocompatability

et al. 2017

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Abstract:In the field of orthopedics, magnesium (Mg) and magnesium-based composites as biodegradable materials have attracted fundamental research. However, the medical applications of magnesium implants have been restricted owing to their poor corrosion resistance, especially in the physiological environment. To improve the corrosion resistance of Mg/HA/TiO 2 nanocomposites, monolayer MgO and double-layer Si/MgO coatings were fabricated layer-by-layer on the surface of a nanocomposite using a powder metallurgy route. Then, coating thickness, surface morphology, and chemical composition were determined, and the corrosion behavior of the uncoated and coated samples was evaluated. Field-emission scanning electron microscopy (FE-SEM) micrographs show that an inner MgO layer with a porous microstructure and thickness of around 34 µm is generated on the Mg/HA/TiO 2 nanocomposite substrate, and that the outer Si layer thickness is obtained at around 23 µm for the double-layered coated sample. Electrochemical corrosion tests and immersion corrosion tests were carried out on the uncoated and coated samples and the Si/MgO-coated nanocomposite showed significantly improved corrosion resistance compared with uncoated Mg/HA/TiO 2 in simulated body fluid (SBF). Corrosion products comprising Mg(OH) 2 , HA, Ca 3 (PO 4 ) 2 , and amorphous CaP components were precipitated on the immersed samples. Improved cytocompatibility was observed with coating as the cell viability ranged from 73% in uncoated to 88% for Si/MgO-coated Mg/HA/TiO 2 nanocomposite after nine days of incubation.

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Section: Characterization and Microstructure Of Immersed Samples In Smentioning

confidence: 99%

Biodegradable Mg/HA/TiO2 Nanocomposites Coated with MgO and Si/MgO for Orthopedic Applications: A Study on the Corrosion, Surface Characterization, and Biocompatability

et al. 2017

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“…The electrolyte consisted of Ca (CH 3 COO) 2 (0.1mol/L) and NaH 2 PO 4 (0.06mol/ L). The frequency and duty of the pulsed DC power were 660 Hz and 15% and the voltage range was 550-600V 9) .The specimens were subsequently rinsed and sonicated in distilled water. …”

Section: Preparation Of Specimensmentioning

confidence: 99%

Biocompatibility and Anti-Bacterial Activity of Zn-Containing HA/TiO2 Hybrid Coatings on Ti Substrate

Zhang

2013

J. Hard Tissue Biology.

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Abstract. To improve the osteogenic and anti-bacterial activity for the hydroxyapatite coated titanium substrate Zn containing HA biological coating was prepared on commercially pure Ti via the sol-gel method after treatment by oxidation which produced a porous titania coating on the titanium. The phase structures of the coatings were characterized by X-ray diffraction. The release concentration of zinc was measured by an inductively coupled plasma spectrometer. In vitro co-culture assays were performed to evaluate the cell morphology and attachment of MG-63 cells to the coated titanium. The anti-bacterial effect of the ZnHA/TiO 2 coating was evaluated on Porphyromonas gingivalis w83. The cell micro morphology on the ZnHA/TiO 2 coatings was more polygonal than that of HA/TiO 2 coatings when viewed by SEM. It was confirmed by fluorescence microscopy observations that the MG-63 cells on the hybrid coating layer were favorably adhered. Compared with the HA/TiO 2 coating, the ZnHA/TiO 2 coating significantly inhibited the growth of Porphyromonas gingivalis. The results suggest that the ZnHA/TiO 2 hybrid coatings on titanium implants should possess better mechanical binding properties and biocompatibility.

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“…It has been recently shown that the microstructure of conventional titanium can be significantly refined to yield ultrafine-grained titanium via severe plastic deformation techniques. 17 Hence, HESP holds potential as a new method that can be applied to prepare nanoscale surfaces for implants at both the laboratory and the industry levels, without using any additional chemicals or complicated synthesis routes.…”

Section: Introductionmentioning

confidence: 99%

Surface characteristics of and in vitro behavior of osteoblast-like cells on titanium with nanotopography prepared by high-energy shot peening

Deng¹,

Yin²,

Li³

et al. 2014

IJN

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Background and methods Commercial pure titanium with nanotopography was prepared via a high-energy shot-peening (HESP) technique. The surface characteristics were evaluated, and the preliminary cell responses to the nanotopographical surface were investigated. Results The nanotopographical surface layer on titanium was successfully processed by HESP. The average nanoscale grains were approximately 60 nm in diameter and they were nonhomogeneously distributed on the surface. MG-63 cells with an osteogenic phenotype were well adhered and well spread on the nanostructured surface. Compared to the original polished control, the nanotopographical surface highly improved the adhesion, viability, and differentiation of MG-63 cells. Conclusion Titanium with nanotopography achieved by HESP has good cytocompatibility and shows promise for dental implant applications.

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Synthesis and properties of hydroxyapatite-containing porous titania coating on ultrafine-grained titanium by micro-arc oxidation

Cited by 178 publications

References 48 publications

Biodegradable Mg/HA/TiO2 Nanocomposites Coated with MgO and Si/MgO for Orthopedic Applications: A Study on the Corrosion, Surface Characterization, and Biocompatability

Biodegradable Mg/HA/TiO2 Nanocomposites Coated with MgO and Si/MgO for Orthopedic Applications: A Study on the Corrosion, Surface Characterization, and Biocompatability

Biocompatibility and Anti-Bacterial Activity of Zn-Containing HA/TiO2 Hybrid Coatings on Ti Substrate

Surface characteristics of and in vitro behavior of osteoblast-like cells on titanium with nanotopography prepared by high-energy shot peening

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