Characterization of PEO nanocomposite coatings on titanium formed in electrolyte containing atenolol

Sharifi, Hossein; Mahmood, Asif; Darband, Ghasem Barati; Rouhaghdam, A. Sabour

doi:10.1016/j.surfcoat.2016.07.048

Cited by 30 publications

(8 citation statements)

References 36 publications

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“…Plasma electrolytic oxidation (PEO) is a surface-modification technique for producing ceramic coatings on light metals and their alloys (such as aluminum, magnesium, and titanium) [1,2]. PEO coating is considered to be amongst the most promising protective coatings for application in a wide range of industry sectors because of its high microhardness and its good wear and corrosion resistance [3,4].…”

Section: Introductionmentioning

confidence: 99%

Evolution of the Three-Dimensional Structure and Growth Model of Plasma Electrolytic Oxidation Coatings on 1060 Aluminum Alloy

Liu

Wang

et al. 2018

Coatings

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Abstract:A deeper understanding of plasma electrolytic oxidation (PEO) can in turn shed light on the evolution of coating structures during such oxidation processes. Here, a three-dimensional (3D) structure of PEO coating was investigated based on the morphologies at different locations in a PEO coating and on the elemental distribution along certain sections. The coating surface was dominated by a crater-or pancake-like structure of alumina surrounded by Si-rich nodules. A barrier layer with a thickness of~1 µm consisting of clustered cells was present at the aluminum/coating interface. As the coating thickened, the PEO coating gradually evolved into a distinct three-layer structure, which included a barrier layer, an internal structure with numerous closed holes, and an outer layer with a rough surface. During the PEO process, molten zones formed along with the plasma discharges. The volume and lifetime of the molten zones changed with oxidation time. The diversities of cooling rates around the molten zones resulted in structural differences along a certain section of the coating. A growth and discharge model of PEO coatings was established based on the 3D structure of the particular coating studied herein.

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Section: Introductionmentioning

confidence: 99%

Evolution of the Three-Dimensional Structure and Growth Model of Plasma Electrolytic Oxidation Coatings on 1060 Aluminum Alloy

Liu

Wang

et al. 2018

Coatings

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“…The micro-arc oxidation process directly results in micro-arc oxidation on the titanium, and its alloys can only prepare ceramic coatings of titanium oxide and silicon oxide, and the coating growth efficiency and coating compactness are lower than that of the aluminium micro-arc oxidation. In addition, because the hardness of titanium oxide is lower than that of aluminium oxide, the coating wear resistance is not as good as that of the coating, which is mainly composed of aluminium oxide [51,52].…”

Section: Discussionmentioning

confidence: 99%

Morphology and Wear Resistance of Composite Coatings Formed on a TA2 Substrate Using Hot-Dip Aluminising and Micro-Arc Oxidation Technologies

Wang

Zhou

et al. 2019

Materials

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Aluminium layers were coated onto the surface of pure titanium using hot-dip aluminising technology, and then the aluminium layers were in situ oxidised to form oxide ceramic coatings, using the micro-arc oxidation (MAO) technique. The microstructure and composition distribution of the hot-dip aluminium coatings and ceramic layers were studied by using scanning electron microscopy and energy-dispersive X-ray spectroscopy. The phase structure of the MAO layers was studied using X-ray diffraction. The surface composition of the MAO layer was studied by X-ray photoelectron spectroscopy. The wear resistance of the pure titanium substrate and the ceramic layers coated on its surface were evaluated by using the ball-on-disc wear method. Therefore, aluminising coatings, which consist of a diffusion layer and a pure aluminium layer, could be formed on pure titanium substrates using the hot-dip aluminising method. The MAO method enabled the in-situ oxidation of hot-dip pure aluminium layers, which subsequently led to the formation of ceramic layers. Moreover, the wear resistance values of the ceramic layers were significantly higher than that of the pure titanium substrate.

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“…Improved wear resistance was also observed with the addition of ZnO nanoparticles [38]. Recent studies reported reduced coefficient of friction and wear rate with the addition of nanoparticles such as carbon nanotubes and graphene [39] and in nanocomposite coatings reinforced with SiC [40] and Al 2 O 3 [41] for biomedical applications.…”

Section: Wearmentioning

confidence: 93%

High Performance Lightweight Magnesium Nanocomposites for Engineering and Biomedical Applications

Wong¹,

Gupta²

2016

NanoWorld J

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Magnesium is the lightest structural metal that can be used for engineering applications and its non-toxic nature makes it attractive for use as a biomedical implant. The judicious addition of nanoparticles to magnesium assists in enhancing multiple engineering properties that are critical for its widespread use and are superior to that exhibited by conventional micron-size particles containing composites. The ability to improve mechanical properties with the use of smaller volume fraction of reinforcements while keeping density low makes magnesium nanocomposites an attractive choice for lightweight engineering and bio-resorbable biomedical applications. In view of the exceptional response of magnesium in presence of nano-length scale reinforcements, an attempt is made in this paper to provide a brief review of characteristics of several magnesium nanocomposites illustrating the effects of ceramic and metallic reinforcements to enhance mechanical properties.

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Characterization of PEO nanocomposite coatings on titanium formed in electrolyte containing atenolol

Cited by 30 publications

References 36 publications

Evolution of the Three-Dimensional Structure and Growth Model of Plasma Electrolytic Oxidation Coatings on 1060 Aluminum Alloy

Evolution of the Three-Dimensional Structure and Growth Model of Plasma Electrolytic Oxidation Coatings on 1060 Aluminum Alloy

Morphology and Wear Resistance of Composite Coatings Formed on a TA2 Substrate Using Hot-Dip Aluminising and Micro-Arc Oxidation Technologies

High Performance Lightweight Magnesium Nanocomposites for Engineering and Biomedical Applications

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