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Properties of LiMn2O4 powders obtained by ultrasonic spray pyrolysis
(Materials Science Forum, 2004)
LiMn2O4 powders were synthesized by ultrasonic spray pyrolysis. By varying the cooling conditions. two samples of powders were obtained: quenched in water (Q) and spontaneously cooled to room temperature (SC). The crystal ...
Nicolson-Ross analysis of absorption coefficients of nickel and nickel-zinc ferrite powders prepared using a novel method
(Materials Science Forum, 2004)
Nickel and nickel-zinc ferrites are ones of the most abundant members of the soft magnetic materials. In the last few years, the interest in new methods of their preparation increases, because it is well known that the ...
Effects of gamma-irradiation on the dielectric properties of the barium salt of 12-tungstophosphoric acid hydrate
(Materials Science Forum, 2003)
The main aim of this paper is to investigate the effects of gamma-irradiation on dielectric properties of barium salt of 12-tungstophosphoric acid (WPA) hydrate BaHPW12O40-7H(2)O (BaHWPA(.)7). Irradiation was carried out ...
Oxygen reduction on carbon cryogel-supported Pt nanoparticles in acid media
(Materials Science Forum, 2006)
The kinetics of oxygen reduction (ORR) on carbon cryogel supported Pt nanoparticles (Pt / C) in acid solution was studied using the rotating disk electrode technique. This electrocatalyst OF was prepared by a modified ...
Effect of fibre waviness on compression failure of cross-ply carbon/epoxy laminates
(Materials Science Forum, 2000)
Composites were made as cross-ply laminates with artificially introduced waviness near the middle, with different severity of waviness and different fractions of wavy layers. The laminates had configuration (0/(90 0(2))(n) ...
Many-body calculations of dynamic polarizability, reffractive index and verdet coefficient
(Materials Science Forum, 2006)
Within the framework of the many-body theory by using the Random Phase Approximation with Exchange (RPAE) method we calculated the frequency dependent polarizability, refractive index, and Verdet coefficient of some atoms. ...
Microstructure and strength of solid state bonded Ni-Al2O3-Ni3Al laminates
(Materials Science Forum, 1998)
Metal-ceramic-intermetallic multilayered, laminar composites present an attractive group of materials offering a variety of combinations of constituent component properties. Processing of these composites is possible due ...
Thermal stability and kinetic studies of new cobalt(III) complexes with a tetraazamacrocyclic and dithiocarbamate ligands
(Materials Science Forum, 2000)
The thermal properties of four cobalt(III) complexes with cyclam (1,4,8,11-tetraazacyclotetradecane) and the heterocyclic dithiocarbamates Rdtc(-) [2-, 3-, 4-methylpiperidine (2-, 3-, 4-Mepipdtc(-)) or 4-thiomorpholine ...
Influence of titanium carbide on properties of aluminothermic mixture
(Materials Science Forum, 1998)
Influence of different additives on chemical composition and mechanical characteristics of steel castings obtained by aluminothermic reaction has been investigated. A simple and fast production of titanium carbide (TiC) ...
Influence of carbon concentration and rotational temperature on fullerene yield in RF reactor
(Materials Science Forum, 2006)
In this paper, report on fullerene formation in a radio-frequency (RF) thermal plasma reactor has been presented. In order to determine the degree of evaporation of the graphite precursor used, analysis of SEM micrographs ...