Development of HA-CNTs composite coating on AZ31 magnesium alloy by cathodic electrodeposition. Part 1: Microstructural and mechanical characterization

Khazeni, D.; Saremi, M.; Soltani, Reza

doi:10.1016/j.ceramint.2019.02.143

Cited by 43 publications

(18 citation statements)

References 62 publications

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“…Three major factors affect the elastic modulus enhancement of S1.0, S2.0, and S3.0 composites: (a) load transfer efficiency at the HA/CNT interface, (b) higher modulus of elasticity of CNTs, and (c) uniform distribution of CNTs in the HA matrix 46 , 48 . Furthermore, the HA cations can react with the functionalized CNTs (carboxyl groups), possibly creating –COO–Ca–OOC– chemical bonding 49 . The nearby contact among the CNTs and the HA structure may create further CNT binding among the ceramic matrix, resulting in mechanical interlocking enhancement 47 .…”

Section: Resultsmentioning

confidence: 99%

Tribo-mechanical properties evaluation of HA/TiO2/CNT nanocomposite

Zalnezhad

Musharavati

Chen

et al. 2021

Sci Rep

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In this study, a combination of reverse microemulsion and hydrothermal techniques were used to synthesize HA. A hydrothermal method was used to synthesize HA/TiO2/CNT nanocomposite powders. Cold and hot isostatic pressing techniques were used to fabricate tablet-shaped samples. To investigate the biocompatibility and tribo-mechanical properties of HA/TiO2 and HA/TiO2/CNTs, four samples were prepared with different percentages of CNTs, namely, HA/TiO2 (S0), HA/TiO2/CNT (S1.0), HA/TiO2/CNT (S2.0), and HA/TiO2/CNT (S3.0). The microstructure and morphology of the HA/TiO2/CNTs were characterized by transmission electron microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction. Hardness test results show that S3.0 displayed the highest surface hardness (285 HV) compared to other samples. The wear rate of HA/TiO2/CNT with the highest CNT content showed a decrease compared with those of the other samples. The results from nanoindentation tests showed that Young’s modulus of the S3.0 sample was 58.1% greater than that of the S0 sample. Furthermore, the human MDA-MB-231 cell line demonstrated good binding to the surface of the samples in the in-vitro biocompatibility evaluation of the HA/TiO2/CNT composites.

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Section: Resultsmentioning

confidence: 99%

Tribo-mechanical properties evaluation of HA/TiO2/CNT nanocomposite

Zalnezhad

Musharavati

Chen

et al. 2021

Sci Rep

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“…Figure 2e–h shows that CNTs try to reduce the interfacial microcracks in the coating microstructure and increase the bond strength between the particles through the bridging mechanism in the cracks and prevent the breakage of the bond [ 18 ]. It can be concluded that the addition of CNT increases the coating density, removes the agglomerates, and reduces the cracking.…”

Section: Resultsmentioning

confidence: 99%

“…Many materials have been used for composite with Ha including; CNT, GO, Al2O3, ZrO2 etc….. but among the various materials used as reinforcements in hydroxyapatite coatings, reinforcing HA coatings with CNT is a promising solution with more desirable properties such as higher fracture toughness, elastic modulus, hardness and shear strength than single-layer HA coating [ 14 , 16 , 17 ]. In research by Khazeni et al [ 18 ], it was observed that the presence of CNTs in composite coatings containing HA bridges between hydroxyapatite structures and fills empty spaces in the coating to improve its mechanical properties. According to research by Askari et al [ 19 ], HA/YSZ/Al2O3 coatings were more bioactive and more resistant to corrosion than HA coating.…”

Section: Introductionmentioning

confidence: 99%

Corrosion, mechanical and bioactivity properties of HA-CNT nanocomposite coating on anodized Ti6Al4V alloy

Dalili

Aghdam

Soltani

et al. 2022

J Mater Sci: Mater Med

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Hydroxyapatite-carbon nanotubes (HA-CNTs) nanocomposite coating was applied by electrophoretic method on anodized Ti alloy to investigate its stability in simulated body fluid (SBF). The biocoating was characterized by using scanning electron microscope (SEM) for microstructure, X-ray diffraction (XRD) for crystallography. The effect of CNTs concentration on the coating properties was also investigated and found out that CNTs up to 5% has various improving effect on the system. It increased corrosion resistance and adhesion of the coating to the substrate and decreased the number of cracks on the coating. The results of the in vitro test showed that the cell viability increased with increasing the concentration of CNTs to 3 wt.% CNTs.

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“…In more recent work [113], the addition of CNTs increased nanohardness over 52% and Young's modulus over 41%, and 16% in the adhesion strength thanks to improving integrity, crystallinity, and decreasing Young's modulus mismatch of this coating with titanium substrate. Such coatings were also prepared on AZ31 magnesium alloy by ECD and EPD [114], resulting in decreasing seriously corrosion density from 44.2 to 0.7 µA/cm 2 . In [115], different carbon nanostructures, namely exfoliated graphene, RGO, and MWCNTs were co-deposited along with in-situ formed HAp-Ca-P phases.…”

Section: Ceramics-ceramics Coatingsmentioning

confidence: 99%

“…Hydrogen peroxide was added in concentration from 2000 ppm to even 2% [61]. As concerns the other additives, in [114] the addition of 1% MWCNTs to HAp showed the most positive effect on corrosion resistance.…”

Section: Effect Of An Electrolyte Compositionmentioning

confidence: 99%

Electrodeposited Biocoatings, Their Properties and Fabrication Technologies: A Review

Zieliński¹,

Bartmański²

2020

Coatings

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Coatings deposited under an electric field are applied for the surface modification of biomaterials. This review is aimed to characterize the state-of-art in this area with an emphasis on the advantages and disadvantages of used methods, process determinants, and properties of coatings. Over 170 articles, published mainly during the last ten years, were chosen, and reviewed as the most representative. The most recent developments of metallic, ceramic, polymer, and composite electrodeposited coatings are described focusing on their microstructure and properties. The direct cathodic electrodeposition, pulse cathodic deposition, electrophoretic deposition, plasma electrochemical oxidation in electrolytes rich in phosphates and calcium ions, electro-spark, and electro-discharge methods are characterized. The effects of electrolyte composition, potential and current, pH, and temperature are discussed. The review demonstrates that the most popular are direct and pulse cathodic electrodeposition and electrophoretic deposition. The research is mainly aimed to introduce new coatings rather than to investigate the effects of process parameters on the properties of deposits. So far tests aim to enhance bioactivity, mechanical strength and adhesion, antibacterial efficiency, and to a lesser extent the corrosion resistance.

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Development of HA-CNTs composite coating on AZ31 magnesium alloy by cathodic electrodeposition. Part 1: Microstructural and mechanical characterization

Cited by 43 publications

References 62 publications

Tribo-mechanical properties evaluation of HA/TiO2/CNT nanocomposite

Tribo-mechanical properties evaluation of HA/TiO2/CNT nanocomposite

Corrosion, mechanical and bioactivity properties of HA-CNT nanocomposite coating on anodized Ti6Al4V alloy

Electrodeposited Biocoatings, Their Properties and Fabrication Technologies: A Review

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