Showing papers in "Ceramics International in 2013"

TL;DR: In this paper, a comparative study between three different morphologies of ZnO nanostructures, namely nanoparticles (NPs), nanoflowers (NFs) and nanorods (NRs), has been presented.

TL;DR: In this paper, the effects of GPLs on the microstructure and mechanical properties of the Al 2 O 3 based ceramic composites were investigated, and the results show that GPLs are well dispersed in the ceramic matrix.

TL;DR: In this paper, a significant enhancement in the thermal conductivity of silver-nanoparticle-based aqueous nanofluids with the addition of negligible amounts of multi-walled carbon nanotubes (MWCNTs) was reported.

TL;DR: In this paper, the tribological behavior of powder metallurgy-processed Al 2024-5-wt% SiC- x wt% graphite ( x = 0, 5, and 10) hybrid composites was investigated using a pin-on-disc equipment.

TL;DR: In this paper, the effect of graphene nanoplates reinforcement on densification behavior, microstructure, and mechanical properties (microhardness, biaxial flexural strength, and indentation fracture toughness) of the composites are presented.

TL;DR: In this paper, functionalized CNTs were synthesized via a solvothermal process with various concentrations of carboxylic acid groups (COOH) and the results showed that the functional groups had a significant influence on the thermal conductivity of the hybrid nanofluid.

TL;DR: In this article, the zinc oxide (n-ZnO) nanoparticles were synthesized by simple solution-based approaches and characterized by XRD, TEM, SEM and FTIR.

TL;DR: A facile solvent-based synthesis route based on the oxidation-reduction reaction between graphene oxide (GO) and SnCl2·2H2O has been developed to synthesize SnO2/graphene nanocomposites as discussed by the authors.

TL;DR: In this article, the synthesis of zinc oxide nanoparticles using Citrus aurantifolia extracts was reported. But the synthesis performance was not comparable to those obtained from conventional reduction methods using hexamethylenetetramine or cetyltrimethylammonium bromide.

TL;DR: In this paper, a simple hydrothermal method to obtain high-purity hydroxyapatite (HA) nanoparticles from eggshells and three kinds of fruit waste extracts: grape, sweet potato, and pomelo peels.

TL;DR: In this article, a facile and surfactant-free solvothermal method was used to synthesize samarium-doped ZnO nanorods (Sm/ZNRs).

TL;DR: In this paper, the up-conversion emissions were measured using laser excitation at 978-nm, resulting in the following transitions: blue emission in the range of 450-500 nm, weak red emission in range of 650-680 nm and near infrared emission in a range of 765-840 nm for Tm3+, as well as green emission centered at 550-nm and weak near infrared emissions at 755-nm for the Ho3+ ions.

TL;DR: In this paper, tetragonal ZrO2 nanoparticles and nanosheets were synthesized with citric acid assisted sol-gel method, and the effects of heat treatment on zirconia phase evolution were investigated.

TL;DR: In this article, the morphology and crystal structure of Fe2O3 nanoparticles were studied by scanning electron microscopy (SEM), field emission scanning electron microscope (FESEM), and X-ray diffraction (XRD).

TL;DR: In this paper, a green and biosynthesis of zinc oxide nanoparticles (ZnO-NPs) using gum tragacanth was reported, which can be an excellent alternative for the synthesis of ZnO nanoparticles using biomaterials.

TL;DR: In this article, a new foam ceramics was synthesized successfully by conventional ceramic sintering process using fly ash and red mud as the main raw material, with a small amount of sodium borate as fluxing agent and sodium silicate as foaming agent.

TL;DR: In this article, structural and electrical properties of zirconium (Zr) modified-sodium bismuth titanate (NBZT) ceramics were studied.

TL;DR: In this paper, the effect of spray coating AZ31 magnesium alloy with membrane films of pristine and hydroxyapatite-doped poly(lactic acid) is investigated.

TL;DR: The synthetic method used for preparing ZnO nanoparticles strongly influenced the products obtained as discussed by the authors, and the La contents affected the crystallite size, which was explained by the formation of La on the surface of the samples and by the Zener pinning effect.

TL;DR: In this paper, heat treatment produced solid state reactions between eggshell powders and dicalcium phosphate dihydrate (CaHPO4·2H2O, DCPD) or calcium pyrophosphate (Ca2P2O7) for 3h.

TL;DR: In this paper, a photocatalytic and antibacterial carbon nanofiber decorated with TiO 2/ZnO composite NPs was prepared by a simple electrospinning method followed by calcination and hydrothermal treatment.

TL;DR: In this article, a simple and efficient strategy of one-pot synthesis of Ag doped TiO2/ZnO photocatalyst was developed using hydrothermal process using simultaneous crystallization of Ag and ZnO crystals from their precursor solution containing P25 (TiO2) NPs.

TL;DR: Barium hexaferrites with general chemical formula BaFe 12−2 x Mg x Ti x O 19 ( x = 0, 1, 1.5, 2) were synthesized by the solid state diffusion method as discussed by the authors.

TL;DR: In this article, the morphology, crystal structure and optical properties of pure and Ni-doped ZnO nanofibers were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and photoluminescence (PL) spectroscopy, respectively.

TL;DR: In this paper, the dependence of phase structure, unit cell volume, anti-ferroelectric properties and energy storage properties on the Zr:Sn ratio has been studied, and the results indicate that varying the zr:sn ratio is an effective method to improve the energy storage performance of PBLZST anti-Ferroelectric ceramics.

TL;DR: In this article, a green and facile one-step hydrothermal process was used to synthesize a composite of metal, metal oxide and graphene oxide (GO) for cyclic use.

TL;DR: In this article, two different hydroxyapatite based composites reinforced by oxide ceramic nano crystals were synthesized by high-energy ball milling and sintered by pressure less technique.

TL;DR: In this paper, three concentric ring regions with different coatings appeared on the surface of the ablated C/C-ZrC-SiC composites: (i) brim ablation region covered by a coating with layered structure including SiO 2 outer layer and ZrO 2 -SiO 2 inner layer; (ii) transition and center ablation regions with molten Zr O 2 coating.

TL;DR: In this paper, the morphology, crystal structure, and sensing properties of ZnO nanosheets to NO 2 gas at room temperature under UV illumination were examined, where Au nanoparticles with diameters of a few tens of nanometers were distributed over the ZnOsheets and the responses of the multiple networked nanosheet gas sensors were improved 1.8-3.3 fold by Au functionalization at NO 2 concentrations ranging from 1 to 5ppm.

TL;DR: In this paper, a comparison of different binding systems for refractory castables is shown and the benefits of replacing CAC or hydratable alumina by colloidal binders is discussed.