Showing papers in "Journal of Alloys and Compounds in 2007"

TL;DR: In this article, the evolution of the microstructure from as-cast to cast-T4 to castT6 involves solid solution+eutectic compound+supersaturated solid solution + cuboid-shaped compound.

TL;DR: In this article, the authors used Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and simultaneous thermal analysis (STA) to study the structural evolution of hydroxyapatite powders.

TL;DR: In this article, a phosphor of LaAlGe2O7 activated with the trivalent rare-earth Ln3+ (Ln = Eu, Sm, Dy) ions was synthesized by solid-state method, and their characterization and luminescent properties were investigated.

TL;DR: In this article, the effect of various reactants on the formation kinetics of complex borohydrides is investigated, and it is found that the kinetic barriers for the formation of LiBH 4, NaBH4 and Ca(BH 2 ) 2 are drastically reduced when MgB 2 is used instead of B as starting material.

TL;DR: In this paper, the authors present a brief overview of the hydrogen generation system based on catalytic dissociation and hydrolysis of ammonia-borane, which possesses high potential to find application to portable fuel cells.

TL;DR: In this article, the microstructure, tensile properties, and creep behavior of Mg-(1-10)wt%Sn alloys were studied, and it suggested that the indentation creep resistance of mg-sn alloys could be obviously improved with the increase of tin content.

TL;DR: The polycrystalline sample of NaBa2V5O15 (NBV), a member of tungsten bronze family, is prepared by a mixed oxide-technique and X-ray diffraction analysis shows the formation of single phase compound with an orthorhombic structure at room temperature.

TL;DR: In this paper, the influence of element Y on the mechanical properties of the as-cast Mg-5.5Zn-xY-0.8Zr alloys has been investigated and compared.

TL;DR: In this paper, thin films of tin disulfide (SnS2) have been deposited by using low cost successive ionic layer adsorption and reaction (SILAR) technique.

TL;DR: In this paper, the influence of stress-induced martensitic transformation by cold rolling and its reverse transformation to β by subsequent heat treatment on mechanical properties, such as Young's modulus and tensile properties was examined using metastable β (Ti-35mm% Nb) −4mm% Sn.

TL;DR: In this paper, the 10th International Symposium on Metal-Hydrogen Systems, Fundamentals and Applications, Lahaina, HIGM Res & Dev, Hawaii Hydrogen Carriers LLC; Hy Energy, LLC; Jet Propuls Lab; NIST Ctr Neutron Res; Suzuki Shokan Co, Ltd; Toyota Motor Sales Reference EPFL-ARTICLE-205982

TL;DR: In this paper, a coprecipitation-calcination method was used to synthesize Lanthanum zirconate (LZ) and CeO 2 doped La 2 Zr 2 O 7 (LCZ) ceramic powders, which were mechanically ball-milled, vacuum dried, molded by cold pressure and densified by sinter at 1650°C for 10h.

TL;DR: In this paper, a series of Eu3+-doped double molybdates red phosphors, NaLn1−xEux(MoO4)2, AEu(MoOn4), and A 0.5 Eu (Mo O 4 ) 2 (A, A′−= Li, Na and K) were prepared by the conventional solid-state reaction.

TL;DR: In this paper, the balling processes during direct laser sintering of a multi-component Cu-based metal powder, which consisted of a mixture of Cu, Cu-10Sn and Cu-8.4P, were investigated.

TL;DR: In this article, experimental approaches for altering the thermodynamics and kinetics of light element hydride systems are discussed, and the catalytic effects of a variety of transition metal sources on hydrogen exchange in the LiBH 4 /MgH 2 system are described.

TL;DR: In this article, the interdendritic phases of as-cast Mg-Zn-Nd-Y-Zr alloys were investigated, and they were changed by the addition of Nd to T phase or T phase coexisting with W phase.

TL;DR: In this article, nano-Y2O3 particulates containing magnesium nanocomposites were synthesized using an innovative disintegrated melt deposition technique followed by hot extrusion, and microstructural characterization of the composite samples showed retention of reinforcement, significant grain refinement of magnesium matrix, and the presence of minimal porosity.

TL;DR: In this paper, the performance of sand cast Mg-Y-RE-Zr alloy after different heat-treatments was investigated in 3.5% NaCl solution saturated with Mg(OH) 2 (pH 10.5) using potentio-dynamic polarization and Auger electron spectroscopy.

TL;DR: Moreau et al. as discussed by the authors described the early years of high magnetic fields at the Cambridge University Engineering Department, by Martin Cowley and John E Allen, and illustrated the properties of the Hartmann layer.

TL;DR: In this paper, superparamagnetic iron oxide (SPIO; Fe 3 O 4 ; magnetite) nanoparticles and chitosan were developed as a novel MRI-detectable embolic material.

TL;DR: In this article, the photocatalytic activity of ZnWO 4 nanoparticle catalysts was investigated and it was found that ZnwO 4 catalysts exhibited a high photocatalysis activity, not only in the decomposition of formaldehyde in gaseous, but also in the degradation of RhB in water.

TL;DR: In this article, the combustion synthesis and photocatalytic production of oxygen at room temperature from water using visible light in the presence of a sacrificial reagent was described, where powder XRD, DRS, BET method, and SEM were characterized.

TL;DR: In this paper, the average particle size of the hematite was about 4 nm with a narrow size distribution, while selected area electron diffraction confirmed the formation of the hematite phase.

TL;DR: In this paper, the authors investigated the electromagnetic shielding effectiveness of carbon nanotubes (CNTs) or multi-wall nanotsubes (MWNTs), which are used as electronic conductive fillers in plastic package.

TL;DR: In this paper, the thermal desorption properties of metal-borohydrides M(BH 4 ) n were investigated by gas-chromatography and mass-spectroscopy combined with thermogravimetry.

TL;DR: In this article, a valence change from Eu 3+ to Eu 2+ was observed in the europium ion-doped ZnO-B 2 O 3 -P 2 O 5 glasses prepared at high temperature in air.

TL;DR: In this paper, the authors demonstrate that fabrication of gold nanoparticles by arc discharge in water is an alternative, cheap, effective and environmentally friendly method to synthesize gold nanostructures.

TL;DR: In this article, the influence of calcium on refinement of AZ91D alloy was investigated by optical microscopy, scanning electron microscopy and thermal analysis, and it was shown that increasing the amount of added Ca (≤1.0%Ca), the grain refinement tendency of AZ 91D alloy intensified.

TL;DR: In this paper, two ultra-high temperature HfB 2 -SiC ceramics were successfully consolidated by hot-pressing (HP) and spark plasma sintering (SPS).

TL;DR: In this paper, a multilayer tape casting and co-sintering process was developed to fabricate large area anode-supported electrolyte film, which is critical for planar type reduced temperature solid oxide fuel cells (SOFCs).