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MgO/ZnO coatings formed on magnesium alloy AZ31 by

This paper presents the results of our recent investigation of MgO/ZnO coatings formed on AZ31 magnesium alloy by plasma electrolytic oxidation in phosphate-based alkaline electrolyte with varying concentration of ZnO particles. Surface morphology of obtained coatings is not significantly influenced by the addition of ZnO particles to the supporting …

Durable Epoxy@ZnO Coating for Improvement of

The durability of epoxy@ZnO coating on wood surfaces can contribute to sound surface stability, which is necessary for outdoor applications, where the wood surface may be degraded by natural weathering conditions, such as rain, wind and UV-light irradiation. The color stability efficiency of the epoxy@ZnO coated wood surface was evaluated by ...

Surface Modification of ZnO Nanotubes by Ag and Au Coatings …

1. Introduction. Zinc oxide (ZnO) is considered a prospective candidate that can substitute gallium nitride (GaN)-based materials in the mass production of various optoelectronic devices, such as efficient ultraviolet (UV) light-emitting devices (LEDs) or low threshold UV lasers. 1−3 ZnO possesses similar physical properties to GaN, such as a …

High colloidal stability ZnO nanoparticles independent on …

Acetylacetonate functionalized ZnO exhibited long-term stability and maintained its superior optical and electrical properties for months aging under ambient …

ZnO-based antimicrobial coatings for biomedical …

Among antimicrobial coating, zinc oxide (ZnO) stands as one of the excellent materials owing to zero toxicity, high biocompatibility to human organs, good stability, high …

Coatings | Free Full-Text | Anodic ZnO Microsheet Coating on Zn …

Zinc-based alloys are emerging as an alternative to magnesium- and iron-based alloys for biodegradable implant applications, due to their appropriate corrosion performance and biocompatibility. However, localized corrosion occurring on the zinc surface, which is generally associated with restricted mass transport at specific surface sites, such as in …

ZnO–SiO2 composite coating with anti-reflection and …

ZnO–SiO 2 coating not only has a peak transmittance of 98.37%, but also converts 342 nm to about 578 nm of light. • The increase of photocurrent derived from photoluminescence …

A review on ZnO: Fundamental properties and applications

ZnO has a significant advantage for above mentioned applications. For device applications ZnO''s extrinsic properties can be manipulated and controlled by doping in ZnO with diverse elements has been a well-liked procedure [45]. ZnO''s different nanostructure systems, is drawing globally deep interest especially for photonic applications.

ZnS coating for enhanced environmental stability and …

Low environmental stability of ZnO nanostructures in hydrophilic systems is a crucial factor limiting their practical applications. ZnO nanomaterials need surface passivation with …

ZnO-based antimicrobial coatings for biomedical applications

ZnO coating will also experience failures and damages for long term use such as thermal aging failure, adhesive failure, cohesive failure, fatigue failure, and depletion failure. Therefore, routine maintenance is needed to keep antibacterial properties stable. All in all, ZnO shows a bright promise as future antibacterial coating materials due ...

MgO/ZnO coatings formed on magnesium alloy AZ31 by

MgO/ZnO coatings were formed on magnesium alloy AZ31 by PEO processing in phosphate-based electrolyte with addition of various concentrations of ZnO particles. The surface morphology is not significantly influenced by the addition of ZnO particles to the supporting electrolyte, but PEO processing time has considerable influence on the …

Biocompatibility and Antibacterial Properties of ZnO-Incorporated ...

After the PEO process with ZnO nanoparticles the emission spectra changed. Red shift of emission peak from 524 to 530–536 nm was observed. New peak at 379 nm appeared in ZnO-incorporated oxide coatings. It is known that ZnO has two emission bands: UV (375–384 nm), related to excitons, and visible (430–700 nm), related to structure defects ...

Evaluation of zinc-oxide nanocoating on the characteristics and ...

These results coincide with the results obtained by Kachoei et al, 14 who showed that the presence of ZnO nanoparticles coating on the wires has significantly decreased the frictional forces up to 21%. The frictional force was recorded as 1.227 N in the coated wires and 1.642 N for the non-coated wires.

Investigation of surface properties and corrosion

Collectively, the findings of this study signify HA/ZnO reinforced coatings are a promising approach to improve surface properties and corrosion behavior of Mg alloys for future bone implant applications. Introduction. Titanium alloys, stainless steel, and cobalt‑chromium alloys are some limited choices for metallic implants with good ...

Air Plasma-Nano ZnO Coating Improves the Impact Resistance of …

ABSTRACT. In this study, air plasma and ZnO coating was used to modify ultra-high-molecular-weight polyethylene fibre (UHMWPE). The surface morphologies of the fibre with and without ZnO coating were examined under an electron scanning microscope (SEM), and the surface chemical composition was studied through X-ray spectroscopy.

Cathodic electrophoretic deposited HA-rGO-ZnO ternary …

The distance between substrate and stainless-steel plate was kept constant at 2 cm. The procedure to prepare the HA-GO-ZnO composite coatings using the EPD process consisted of two steps. During the first step, the HA-GO-ZnO composite coatings were deposited at a high voltage of 180 V for 2 min, and then drying at room temperature for 2 h.

Sustainable lignin-based powder coatings doped with ZnO …

The modified lignin and ZnO demonstrated outstanding synergistic anti-UV aging properties in the coating. At this level, the basic performance of the coating has not been reduced …

Angstrom Thick ZnO Passivation Layer to Improve the ...

In this paper, we demonstrate that angstrom thick single atomic layer deposited (ALD) ZnO passivation can significantly improve the photoelectrochemical (PEC) activity of hydrothermally grown TiO2 ...

ZnO piezoelectric coatings used for the ultrasonic excitation of ...

ZnO coating is widely used for the ultrasonic transducer due to its excellent piezoelectric property and stable structure in high temperatures. Therefore, it is an outstanding candidate for the excitation of both longitudinal and transverse waves and has a good application prospect in the field of bolt prestress measurement by ultrasonic sound ...

Enhancement of GaAs solar cell performance by using a ZnO …

The performance of a GaAs p–n junction solar cell was investigated by coating the device with 110 nm thick ZnO sol–gel anti-reflection film. A post-furnace thermal annealing at 150 °C for 30 min was performed on the ZnO film after it was spin coated on the device with a speed of 8000 rpm. Ellipsometry was used to measure the reflectance, …

Zinc oxide array/polyurethane nanocomposite coating: …

The preparation of the ZnO nanoparticles for the seed layer is important in order to obtain well-grown ZnO arrays. TEM and HRTEM images of the ZnO nanoparticles are presented in Fig. 2.As can be seen from Fig. 2 a, spherical grains are ~8 nm in diameter with a good dispersion and clear outline. High-quality ZnO nanoparticles can supply dense ZnO seed …

Preparation of stainless steel mesh-supported ZnO and …

A series of zinc oxide (ZnO) nanorods arrays with different morphologies are synthesized on stainless steel mesh via a facile electrodeposition method. The influences of …

ZnO-based antimicrobial coatings for biomedical …

ZnO holds such promising properties, acting as transparent conducting oxide (TCO) as well as antibacterial and antimicrobial coating. Fabricated by various methods, ZnO thin film …

Enhancement of GaAs solar cell performance by using a ZnO …

The performance of a GaAs p–n junction solar cell was investigated by coating the device with 110 nm thick ZnO sol–gel anti-reflection film. A post-furnace thermal annealing at 150 °C for 30 min was performed on the ZnO film after it was spin coated on the device with a speed of 8000 rpm. Ellipsometry was used to measure the reflectance, thickness, and …

ZnS coating for enhanced environmental stability and improved ...

Low environmental stability of ZnO nanostructures in hydrophilic systems is a crucial factor limiting their practical applications. ZnO nanomaterials need surface passivation with different water-insoluble compounds. This study describes a one-step passivation process of polycrystalline ZnO films with ZnS as a facile method of ZnO …

Antibacterial properties of laser surface-textured TiO2/ZnO …

Section snippets Preparation of the TiO 2 /ZnO coatings. Commercial TiO 2 (Metco 102 Oerlikon Metco, ≥ 99.0 wt%) with a nominal particle size distribution of 11–45 μm and ZnO (Sigma Aldrich, ≥ 99 wt%) with particle size of less than 5 μm were used as raw materials. The TiO 2 and ZnO powders were mixed in the ratios shown in Table 1 and used as …

Synthesis and characterization of Al2O3/ZnO coatings formed …

Mixed Al 2 O 3 /ZnO coatings are prepared by conventional DC plasma electrolytic oxidation (PEO) of aluminum in boric acid and borax solution containing ZnO nanoparticles. Scanning electron microscopy equipped with energy dispersive x-ray spectroscopy, x-ray diffraction, and Raman spectroscopy were employed to monitor morphological, structural, …

Bioactive ZnO Coatings Deposited by MAPLE—An Appropriate …

The ZnO/CD/Cfp coatings show a continuous coverage of the substrate with spherical shaped nanocrystals. The ZnO/Cd/Cfp coatings were porous and randomly orientated with thin cracks of micrometer length which were visible on the surface (Figure 4 b,c). The average size of particles is up to 100 nm.

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