Development of graphene oxide/calcium phosphate coating by pulse electrodeposition on anodized titanium: Biocorrosion and mechanical behavior

Fathyunes, Leila; Khalil‐Allafi, Jafar; Moosavifar, Maryam

doi:10.1016/j.jmbbm.2018.11.011

Cited by 69 publications

(25 citation statements)

References 60 publications

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“…Nevertheless, during the electrophoretic deposition process, the pH rises at the cathodic substrate, resulting in deprotonation of carboxyl groups (COOH) and, thereby, functionalized CNTs become more negatively charged. Carboxyl groups (COO-) facilitate the electrostatic interaction of Ca 2+ ions from HAp with CNTs [46]. Based on reports to date, and our research, the hydrophobic appearance of an arrangement of CNTs and porous HAp may be attributed to an occurrence of a specific architecture with a lesser ability to form van der Waals bonds between water and specimen surface.…”

Section: Nanoscratch Testmentioning

confidence: 61%

“…Fathyunes et al (2018) proposed that during electrodeposition the water reduction produces hydroxyl ions, causing an increase in the pH near the cathode. Then, the CaP ceramics become insoluble and precipitate on the surface of the titanium substrate [46]. Figure 2 presents the SEM images of the surface topography of carbon nanotubes (0.27CNT), hybrid coating (H0.27CNT), and composite coating (m0.4CNT) together with their EDS spectra, confirming the formation of individual coatings.…”

Section: Contact Angle Studiesmentioning

confidence: 77%

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Comparison of Properties of the Hybrid and Bilayer MWCNTs—Hydroxyapatite Coatings on Ti Alloy

et al. 2019

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Carbon nanotubes are proposed for reinforcement of the hydroxyapatite coatings to improve their adhesion, resistance to mechanical loads, biocompatibility, bioactivity, corrosion resistance, and antibacterial protection. So far, research has shown that all these properties are highly susceptible to the composition and microstructure of coatings. The present research is aimed at studies of multi-wall carbon nanotubes in three different combinations: multi-wall carbon nanotubes layer, bilayer coating composed of multi-wall carbon nanotubes deposited on nanohydroxyapatite deposit, and hybrid coating comprised of simultaneously deposited nanohydroxyapatite, multi-wall carbon nanotubes, nanosilver, and nanocopper. The electrophoretic deposition method was applied for the fabrication of the coatings. Atomic force microscopy, scanning electron microscopy and X-ray electron diffraction spectroscopy, and measurements of water contact angle were applied to study the chemical and phase composition, roughness, adhesion strength and wettability of the coatings. The results show that the pure multi-wall carbon nanotubes layer possesses the best adhesion strength, mechanical properties, and biocompatibility. Such behavior may be attributed to the applied deposition method, resulting in the high hardness of the coating and high adhesion of carbon nanotubes to the substrate. On the other hand, bilayer coating, and hybrid coating demonstrated insufficient properties, which could be the reason for the presence of soft porous hydroxyapatite and some agglomerates of nanometals in prepared coatings.

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Section: Nanoscratch Testmentioning

confidence: 61%

Section: Contact Angle Studiesmentioning

confidence: 77%

Comparison of Properties of the Hybrid and Bilayer MWCNTs—Hydroxyapatite Coatings on Ti Alloy

et al. 2019

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“…According to their results, the measured corrosion currents in Hanks’ solution varied between 0.4 and 0.9 µAcm −2 , depending on the morphology of the HAp powder. There are also research works on studying the corrosion characteristic of ionic doped CP coatings [ 34 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 ]. Iqbal et al [ 34 ] reported the biodegradability properties of zinc-doped hydroxyapatite−zeolite/polycaprolactone composite coating, prepared by dip coating onto a magnesium substrate.…”

Section: Resultsmentioning

confidence: 99%

Morphological, Chemical, and Biological Investigation of Ionic Substituted, Pulse Current Deposited Calcium Phosphate Coatings

Furkó

Balázsi

2020

Materials

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Ionic substituted calcium phosphate coatings (iCP) have been prepared by the electrochemical pulse current deposition technique with an alternate pulse on and off time of 5 ms onto a titanium alloy substrate. The elemental distribution and morphology of the deposited layers have been extensively studied by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), and transmission electron microscopy (TEM). The crystallinity and phase structure of iCPs have been investigated by X-ray diffraction (XRD). The corrosion characteristics and biodegradability of coatings have been determined by electrochemical measurements, recording potentiodynamic curves in a physiological solution over a long-term immersion period. The cell viability tests confirmed that the iCP coating was biocompatible, while the corrosion tests proved its biodegradable characteristic. In our paper, we compare the morphological, chemical, and biological characteristics of silver and zinc substituted calcium phosphate layers deposited by the electrochemical method.

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“…These observations clearly evident that the addition of graphene oxide enhances the bonding property, the functional moieties such as carboxylic group (À COOH), a hydroxyl group (À OH) and epoxy groups present on the surface of GO anchors to the metallic surfaces by means of the covalent linking. [46][47][48] These inferences signified that the fusion of graphene oxide to the HAP boosts its attachment to the implant surface which makes it suitable for higher load-bearing applications. On the other hand, the sol-gel derived coatings obtained via the spin coating method will self-passivates the metallic surface which leads to better attachment of HAP/GO coatings on 316 L SS substrate.…”

Section: Eis Studiesmentioning

confidence: 99%

In Vitro Electrochemical Behavior of Sol‐Gel Derived Hydroxyapatite/Graphene Oxide Composite Coatings on 316L SS for Biomedical Applications

Sebastin

Vijayalakshmi

2020

ChemistrySelect

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Development of bioceramic coatings on the metallic implant surface with superior properties such as good bonding strength, better corrosion resistance and bioactivity was one of the key tasks for the present biomaterial scientists. Hydroxyapatite (Ca 10 (PO 4) 6 (OH) 2) was one of the hopeful calcium phosphate-based ceramic biomaterials which can be enforced as a layer on the metallic substrate due to its resemblance with the human bone in chemical composition. Current effort defines the in-situ blending of HAP/graphene oxide composite by the sol-gel process. The prepared HAP/GO composites were characterized using FT-IR, XRD, SEM and TEM analysis. A triple-layered composite coating was attained at the spin speed of 3000 rpm/min further sintered at 600°C for 2 hrs. In-vitro corrosion resistance behavior of the coatings on 316 L SS implant were studied on simulated body fluid. The average crystallite size of the synthesized powders was reduced from 40.58 to 21.08 nm with the addition of graphene oxide, antibacterial study for the HAP/GO composite powder competently inhibits the growth of pathogens. Electrochemical studies and adhesion studies showed increased corrosion resistance with superior bonding strength on 316 L SS surface, which results its use for long term biomedical applications.

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Development of graphene oxide/calcium phosphate coating by pulse electrodeposition on anodized titanium: Biocorrosion and mechanical behavior

Cited by 69 publications

References 60 publications

Comparison of Properties of the Hybrid and Bilayer MWCNTs—Hydroxyapatite Coatings on Ti Alloy

Comparison of Properties of the Hybrid and Bilayer MWCNTs—Hydroxyapatite Coatings on Ti Alloy

Morphological, Chemical, and Biological Investigation of Ionic Substituted, Pulse Current Deposited Calcium Phosphate Coatings

In Vitro Electrochemical Behavior of Sol‐Gel Derived Hydroxyapatite/Graphene Oxide Composite Coatings on 316L SS for Biomedical Applications

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