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

Tin oxide nanostructures, un-doped and Zn-doped, have been prepared by conventional sol-gel technique. Research grade tin chloride (SnCl2.2H2O) and zinc acetate (Zn(O2C2H3)2) were used as tin and zinc sources. Ethylene glycol and alcohol were used as solvents under different synthesis conditions. Transparent un-doped and Zn-doped SnO2 sol was prepared after continuous stirring and refluxing at ...

The rechargeable metal-air battery technology is a well-interested smart method for eco-friendly and sustainable energy storage. Both of the two order magnitude lower global market price per tonne Zn compared to lithium multiple theoretical practical specific density ZAB worldwide Li-ion designs contributes developing continuously Zn-air battery. air electrode as cathode has vital role in incre...

In this work, the composition of zinc–aluminum–magnesium alloy coating was designed to have a fixed aluminum–magnesium ratio 1:1, while content aluminum and magnesium elements increases gradually within range 1–2 wt.%. The micro-morphology with different compositions observed by scanning electron microscope (SEM). Combined surface distribution results energy dispersive spectrometer (EDS) analys...

Slow strain rate tests were performed on quenched and tempered AISI 4340 steel to measure the extent of hydrogen embrittlement caused by electroplating with zinc-cobalt alloys. The effects of bath composition and pH were studied and compared with results for electrodeposited cadmium and zinc-10%nickel. It was found that Zinc-1%cobalt alloy coatings caused serious hydrogen embrittlement (EI 0.63...

The change of microstructure of the title alloys with concentration, temperature and applied thermal treatment was studied in situ by XRD. The alloys, having the Zn atomic fraction, x(Zn), from 0.03 to 0.62, were subjected to: (i) rapid quenching from a temperature, Tt, higher than the solid-solution temperature, Tss, in water at RT (samples WQ); (ii) slow cooling from Tt to RT (samples SC). Th...

Tribological properties of tin (Sn)-zinc (Zn) hybrid coating on bronze were evaluated in lubricated condition mating with a chromium alloy steel (Japanese Industrial Standards, JIS SUJ2) flat surface. A shot peening technique using Sn and Zn fine powders as the impact media was applied to process. The resulted film thickness approximately 1-2 µm. mono-layered showed that friction coefficient we...

The aim of this study was to assess the biological and antibacterial properties composite coatings on titanium surfaces modified by microarc oxidation sol-gel processing. A layer hydroxyapatite (HA) with different concentrations zinc (Zn) ions, prepared method, coated oxidized Ti (MAO-Ti) substrates. Five groups specimens were tested. microstructures, elemental compositions, chemical phases inv...

In this study, three new Schiff bases were synthesized from paeonol and amino acids to prepare a compound base coating on the Mg-Zn-Y-Nd alloy (ZE21B alloy) surface by electrostatic spraying, these single coatings prepared ZE21B as control. The results of SEM XPS confirmed successful preparation coating. Immersion tests electrochemical showed that both significantly improved corrosion resistanc...