Showing papers in "Vacuum in 2020"

TL;DR: In this article, the effect of different electrolytes such as Na2SO4 and KOH on supercapacitor properties has been investigated by XRD, FT-IR, SEM, EDAX, surface wettability study and BET.

TL;DR: In this paper, the photocatalytic degradation of methylene blue dye (MB) has been investigated using bare manganese ferrite (MnFe2O4) nanoparticles and MnFe 2O4 nanoparticles-decorated reduced graphene oxide heterostructures under ultra-violet irradiation.

TL;DR: In this article, the ZnO/CuO hollow microspheres were fabricated by a self-assembly method without a template, and they were successfully prepared via the hydrothermal method.

TL;DR: In this paper, structural properties were studied using X-ray diffraction that showed single-phase crystalline nature with some structural distortions, and Raman spectroscopy was employed to study the defects where longitudinal optical mode confirmed the presence of defects in the form of oxygen vacancies.

TL;DR: In this article, the binding energy, surface roughness, elemental analysis and specific acoustic impedance have been determined via X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), scanning electron microscopy/energy dispersive spectroscope (SEM/EDS), respectively.

TL;DR: In this article, the influence of Mo concentration on the structure, elastic and thermodynamic properties of refractory metal Mo-Al compounds is investigated. But, the structure and related overall performances of Mo-al alloys are unclear.

TL;DR: In this paper, the suitability of graphene oxide (GO) foils as radiation sensitive materials for soft X-ray irradiation is investigated by means of Xray photoelectron spectroscopy (XPS).

TL;DR: In this article, the first-principle calculations to investigate the oxidation mechanism of PtAl coating and explore the influence of alloying elements (Y, Cr and Si) on the oxidation resistance of PAl coating were performed.

TL;DR: In this article, the authors examined the temperature-dependent currentvoltage (I-V) characteristics of the Ni/Au Schottky contact to β-Ga2O3.

TL;DR: In this paper, the influence of alloying elements on the Vickers hardness, elastic and thermodynamic properties of IrAl coating was investigated. But the results showed that these elements are stable in IrAl and the Re-doped IrAl is more thermodynamic stability than the TM-doping IrAl.

TL;DR: In this paper, the effects of linear heat input (LHI) on the microstructure and corrosion behavior of an austenitic stainless steel processed by wire arc additive manufacturing (WAAM) are studied.

TL;DR: MnO2 and reduced graphene oxide composite electrodes with different electrodeposition time after alcohol infiltration were prepared by a simple electrochemical deposition method without any binder under argon atmosphere as discussed by the authors.

TL;DR: In this article, the hydrogen storage performances of pure graphene nanoribbon and the Li-decorated one were studied through the first-principle density functional theory, and the results showed that the decorated Li atom could be chemisorbed on the hollow center of the C hexagon with the highness and the adsorption energy of 1.730 and 0.807, respectively.

TL;DR: In this article, the effects of Al content on the microstructure, wear resistance, corrosion resistance and high temperature oxidation resistance of CoCrFeMnNi high-entropy alloy cladding layer prepared by micro-beam plasma cladding process were studied in detail.

TL;DR: In this paper, the first principles based on density functional theory are used to calculate the adsorption of gas (CO, NO) molecules on group III (B, Al, Ga, In) atoms adsorbed g-C3N4.

TL;DR: In this paper, the mechanical and thermal properties of TiN/CrN_M1 and _M2 multilayers with bilayer period of ~17.8 and 6.7 nm were investigated.

TL;DR: In this paper, a duplex treatment of laser surface texturing (LST)-thermal oxidation (TO) was conducted on Ti6Al4V alloy to improve its mechanical property and wear performance.

TL;DR: In this paper, the structural, elastic modulus, hardness and thermodynamic properties of orthorhombic ZrAl-type aluminides are studied by the first-principles calculations.

TL;DR: In this paper, the influence of vacancy on the overall performance of hexagonal C40 MoSi2 ceramics is unknown. But the authors predict that the vacancies can improve the overall performances of C40MoSi2.

TL;DR: In this paper, a poly(o-phenylenediamine)+poly(p-toluidine)/Zirconium oxide nanoparticles) nanofiber composites thin film [PoDA+PpT/ZrO2]C is fabricated by using oxidative polymerization method at pH~0.65/anhydrous FeCl3.

TL;DR: In this article, the authors investigated oxygen-deficient lanthanum (La) doped cerium oxide (CeO2) nanoparticles for their potential applications in spintronics and photocatalysis.

TL;DR: In this paper, Ni-W nanocrystalline alloy coatings incorporated with different amounts of Y2O3 nanoparticles (0-20g/L in the electrolyte) were successfully synthesized via direct current electrodeposition method at an applied current density of 2 A/DM2.

TL;DR: In this article, the influence of preaging process on mechanical properties and conductivity of 7055 aluminum alloy was studied based on microhardness testing, conductivity testing and tensile testing.

TL;DR: In this paper, the authors have reported highly sensitive and linear temperature sensors based on epitaxial silicon carbide (SiC), which have been fabricated and characterized in forward current (I f ) and temperature range from 10pA to 5nA and 233k-473k, respectively.

TL;DR: A brief review of the research progress and existing problems in thermoelectric (TE) materials and devices fabricated by additive manufacturing is provided in this article, where several additive manufacturing techniques for TE materials are highlighted: stereolithography, fused deposition modeling, selective laser melting/sintering, and solution printing.

TL;DR: In this paper, a CoNiCrAlY metallic bond coat was deposited on Inconel 718 superalloy substrate material using APS, SSAPS, D-gun, HVOF and CGDS spraying techniques.

TL;DR: In this paper, a dual-scale TiB2/Cu-Cr composites with nanoscale Cr particles and microscale particles possessed a high strength and hardness, that was conducive to improving the wear resistance.

TL;DR: In this paper, a metal-semiconductor-metal structure ultraviolet photodetectors (UVPDs) were fabricated based on the ZnO/paper films and their optoelectronic response properties were investigated in detail.

TL;DR: In this article, two-dimensional titanium carbide (Ti3C2) MXene has intrinsic catalytic activity for thermal decomposition of high-energy ammonium perchlorate-based molecule perovskite (H2dabco)[NH4(ClO4)3] (DAP-4).

TL;DR: In this article, the effect of electropolishing time on external surface roughness and thickness loss was investigated and the results showed an average of 80% improvement in roughness.