Showing papers in "Journal of Alloys and Compounds in 2008"

TL;DR: In this paper, the covalent binding of chitosan (CTS) onto the surface of magnetic Fe3O4 nanoparticles which were prepared by hydrothermal method using H2O2 as an oxidizer.

TL;DR: In this article, the effects of nano-SiC addition on the thermoelectric and mechanical properties of high-density n-type Bi 2 Te 3 materials were studied.

TL;DR: In this article, the effect of Al 3+ ions on structural, Curie temperature, DC electrical resistivity and dielecltric properties are presented in nanosized cobalt ferrites.

TL;DR: In this article, the authors compared the mechanical properties of four commercial β-titanium alloys (TIMETAL-LCB, Ti-15-3, β-21S, and VT22) in the solution-treated-and-aged (STA) condition following thermomechanical processing comprising β solid solutioning, cold deformation, continuous rapid heating, and final aging.

TL;DR: In this paper, the authors reported synthesis of nanostructured equiatomic high entropy solid solutions from binary to hexanary compositions in Al-Fe-Ti-Cr-Zn-Cu system by mechanical alloying.

TL;DR: In this paper, the Gibbs energy of all individual phases of the binary system Al-Ti was modelled using the CALPHAD approach, and the model parameters were evaluated by means of the computer optimization module PARROT, available within Thermo-Calc.

TL;DR: In this article, the authors used X-ray diffraction (XRD), thermogravimetric (TG) analysis coupled with differential thermal analysis (DTA), transmission electron microscope (TEM), Brunauer-Emmett-Teller (BET) technique, and Fourier transformation infrared spectroscopy (FTIR) for ammonium perchlorate (AP) decomposition.

TL;DR: In this paper, the microstructural and mechanical properties of the friction stir welding (FSW) of 1060 aluminum alloy to a commercially pure copper were investigated. And the effect of formation of hard and brittle intermetallic phase at the interface of the joints on the shear strength of the joint was discussed.

TL;DR: In this article, the synthesis and characterization of CuO flower-nanostructure processed in domestic hydrothermal microwave oven was presented and phase analysis was carried out using X-ray diffraction (XRD) and micro-Raman scattering (MRS).

TL;DR: In this article, the optical constants of the annealed ZnO thin film were determined in the ultraviolet region while increases in the visible region, and the effects of annealing temperature on optical constants were investigated.

TL;DR: In this article, the authors presented an overview of platinum-based catalysts as methanol-resistant oxygen reduction materials for direct DMFCs and proposed Pt alloyed with first-row transition elements as cathode material.

TL;DR: In this article, a polycrystalline sample of (Na0.5Bi 0.5)(Zr0.25Ti 0.75)O3 was prepared using a high-temperature solid-state reaction technique.

TL;DR: In this paper, the effect of annealing temperature and growth time on the morphology of the nanowires was investigated, and it was found that the anning temperature and the growth time played an important role in the morphology and density of the CuO nanowire.

TL;DR: In this article, the microstructures, ageing hardening behaviors and mechanical properties of the two alloys are compared using optical microscopy, scanning electron microscope and X-ray diffraction.

TL;DR: In this paper, the Raman spectra of cubic rare earth oxides are presented and the position of the low wave number bands depends mainly on the cationic mass, meaning that these bands are not due to stretching vibrations, but rather to bending vibrations.

TL;DR: The state-of-the-art of Yb 3+ -doped inorganic materials can be found in this paper, where a few examples such as optical transition assignments in the IR range, diode-pumped-IR laser, figure-ofmerit of laser crystals, concentration quenching studies, evidence of Y b 3+ pairs, the advance of yb 3 +-doped cubic ceramics for laser sources, Yb3+ as sensitizer of activator ions and Yb 2+ ion as structural probes of hosts.

TL;DR: In this article, the Cd ion doping effects in cobalt ferrite using X-ray diffraction (XRD), dielectric and impendence spectroscopy at room temperature were studied.

TL;DR: In this paper, a preliminary study concerning recent progress on the structural properties control of YSZ powders synthesized by sol-gel process and the main advantages of this process compared to conventional methods is investigated.

TL;DR: In this paper, structural and optical properties of ZnO thin films were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM) and optical transmittance spectra.

TL;DR: In this article, a theoretical model available in the literature to predict the fluidity of aluminum alloys and their composites is given and its significance has been discussed and its importance has been brought out.

TL;DR: In this paper, a maskless nanostructure fabrication by laser interference lithography (LIL) using Lloyd's mirror interferometer is investigated, where the edge quality is improved by anti-reflective coating (ARC) between the substrate and the photoresist to minimize the interference of vertical standing waves.

TL;DR: In this article, an alkali precipitation method was used to synthesize zinc oxide (ZnO) and aluminium doped ZnO nanoparticles with grain size in the nanometer range.

TL;DR: In this article, single-wall carbon nanotubes (SWCNTs) with various weight proportions ranging from 0.01 to 1.7% were successfully produced for composite solders.

TL;DR: In this paper, the interface between the Al matrix and the multi-walled carbon nanotubes was examined using transmission electron microscopy and it was shown that the multiwalled nanotube were not damaged during the preparation of the nanocomposite and that no reaction products were detected after sintering.

TL;DR: In this paper, microstructure and hydrogen storage properties of a melt-spun Mg-10Ni-2Mm (at.%) alloy were studied in comparison with those of a conventionally prepared ball-milled one.

TL;DR: Barium zirconium titanate (BZT) ceramics were prepared by mixed oxide method and X-ray diffraction showed the presence of a single phase while Raman scattering confirmed structural transitions as a function of different Zr/Ti ratio as mentioned in this paper.

TL;DR: In this article, a simple hydrothermal route is demonstrated for the synthesis of nickel ferrite nanocrystals, NiFe2O4, using cetyltrimethylammonium bromide (CTAB) as the surfactant and NH3 and NaOH as hydrolyzing agents.

TL;DR: The Mechanochemical Processing (MCP) technology, being developed by Advanced Nanotechnologies based in Perth, is a novel, solid-state process for the manufacture of a wide range of nanopowders as discussed by the authors.

TL;DR: In this article, the authors measured the infrared absorption spectra for pure TeO 2 glasses and doped with 10-wt% of different rare-earth oxides, La 2 O 3, CeO 2, Pr 2 O 4, Sm 2 O 5, Nd 2 O 6, and Yb 2 O 7.

TL;DR: In this article, the effect of amount of Al 2 O 3 nano-particulates on the microstructure and properties of AZ31B magnesium alloy has been investigated using disintegrated melt deposition.