Showing papers in "Journal of Alloys and Compounds in 2003"

TL;DR: LiBH 4 was first synthesized by Schlesinger and Brown [ J. Inorg. Chem. Soc. 62 (1940) 3429] in an organic solvent.

TL;DR: In this paper, the effects of alloy composition on microstructural, especially the formation of large intermetallic compounds, and mechanical properties of various Sn-Ag-Cu solder joints were investigated.

TL;DR: In this article, the specific damping properties and damping functional behaviour of shape memory alloys, with special emphasis on NiTi, are discussed and illustrated by actual applications and applications under development.

TL;DR: In this article, the thermoelectric properties of Sr0.9R0.1TiO3 (R=Y, La, Sm, Gd, Dy) have been measured from room temperature to 1073 K.

TL;DR: In this article, the authors investigated the use of zeolites as potential hydrogen storage materials and showed that hydrogen uptake in zeolite is strongly dependent upon temperature and also on framework and cation type.

TL;DR: The role of B2O3 addition on the long phosphorescence of SrAl2O4:Eu2+, Dy3+ has been investigated in this article, where the afterglow decay was analyzed.

TL;DR: In this article, the structural transitions associated with different cooling rates from the high temperature disordered state were investigated with X-ray diffraction of oriented single crystals of Fe-19 at% Ga.

TL;DR: In this article, the effects of the addition of Bi to Sn-Zn near eutectic alloy and cooling rate on the thermal and mechanical properties were investigated, and it was also confirmed that the difference of cooling rates significantly affects the microstructure and properties.

TL;DR: In this article, the role of the catalysts are still unknown as well as their disposition within the NaAlH4 compound and the extent catalytic dehydrogenation reaction rate of a number of transition metal additions to NaAl H4 at 120°C.

TL;DR: The superabundant vacancies (SAVs) are the vacancies of M atoms formed in M-H alloys, of concentrations as large as ≲30% as mentioned in this paper.

TL;DR: In this article, the thermal properties of polycrystalline perovskite type oxides, viz. the thermal expansion coefficient, melting point, elastic moduli, Debye temperature, and Vickers hardness, have been measured.

TL;DR: In this article, the formation process of the LSGM phase was investigated using DTA-TGA and XRD, and the thermal and electrical properties of the sintered samples were studied by thermal expansion and ac impedance technology.

TL;DR: In this paper, the authors revisited important experiments on the storage capacities of hydrogen in carbon nanostructures and showed that carbon nanotubes at around room temperature cannot store the amount of hydrogen required for automotive applications.

TL;DR: In this article, the formability of an aluminum-clad steel sheet was measured using the Erichsen cupping test technique and the results indicated that there is an optimum annealing temperature and time leading to a high bonding strength as well as enhanced formability.

TL;DR: In this paper, the precipitation hardening response, microstructure and mechanical properties of three Al-Cu-Mg-Ag based alloys containing 0, 0.20 and 0.45 (wt%) Ce were investigated by transmission electron microscopy (TEM) and differential scanning calorimetry (DSC).

TL;DR: In this article, the authors use two-phase composites, in which each phase plays a specific role: damping or strengthening Magnesium matrix composites are good examples Unidirectional solidification of Mg-2 wt% Si alloys yields Mg2Si/Mg composites with a mechanical strength as high as industrial magnesium cast alloys (AZ63) with a damping capacity 100 times higher.

TL;DR: In this paper, the processes occurring in the course of two sequential hydrogen discharging and recharging cycles of Ti-doped sodium alanate were investigated in parallel using XRD analysis and solid-state NMR spectroscopy.

TL;DR: In this paper, a long afterglow R3MgSi2O8:Eu2+, Dy3+ (R=Ca, Sr, Ba) phosphors were prepared at high temperature and weak reductive atmosphere.

TL;DR: In this paper, the structural and electrochemical properties of the La0.7Mg0.3(Ni0.85Co0.15)x (x=3.15, 3.30), 3.65,3.50, and 3.80) hydrogen storage electrode alloys have been studied systematically.

TL;DR: In this article, the interatomic potential parameters of UO2, for a partially ionic potential model, were found out by a fitting method using isothermal compressibility data up to 1600 K. The model also successfully predicts Bredig transition.

TL;DR: In this paper, the authors demonstrate that the presence of TiCl 2, TiF 3, and TiBr 4 improves the absorption and desorption of hydrogen from NaAlH 4.

TL;DR: In this paper, commercial zinc oxide nanoparticles (20-30 nm) were coated by aminopropyltriethoxysilane (APTES) under varying environments.

TL;DR: In this article, it was shown that KAlH4 exhibits a rapid reversible hydrogen decomposition reaction without any aid of external catalysts, without the need for homogeneous doping of the transition metal catalyst.

TL;DR: In this paper, a structural study of the nanocomposite MgH2-Nb5at was performed to see the effect of hydrogenation/dehydrogenation process on the crystal structure.

TL;DR: In this article, a single crystal of MnSi2−x was obtained by a modified Czochralski pulling technique in a cold copper crucible, which revealed the sample to be Mn4Si7.

TL;DR: In this paper, density functional theory was employed to calculate the equilibrium crystal lattice dimensions for most of the rare-earth sesquioxides, which were found to be in reasonable agreement with experimental data given in the literature.

TL;DR: In this article, the effect of partial substitution of Mg by La on the crystal structure and electrochemical performance of the alloys was investigated, showing promising electrode properties including a large discharge capacity (∼400 mAh/g), easy activation and good high-rate dischargeability, although the cycling stability needs further improvement.

TL;DR: Magnesium alanate was synthesized in a metathesis reaction of magnesium chloride and sodium alanates followed by purification as mentioned in this paper, and the material obtained was sufficiently pure and it was investigated by X-ray diffraction (XRD) and by thermogravimetry (TG) and mass spectrometry (MS) of the evolved gas, respectively.

TL;DR: In this paper, a new and powerful method to directly synthesize nanocrystalline metal hydrides from elementary components was presented, which consists of milling at high temperature under hydrogen with the addition of graphite to facilitate the first hydrogenation.

TL;DR: In this paper, a method was developed to synthesize NaBH4 by the reaction of MgH2 with Na2B4O7 through ball milling at room temperature.