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Modification of carbon cloth by interaction with pulsed TEA CO2 laser
(Materials Science Forum, 2004)
The interaction of a Transversely Excited Atmospheric (TEA) CO2 laser (pulse duration less than 2 mus) with carbon and activated carbon cloth was investigated. The investigations have shown that carbon cloth had been ...
Thermal diffusivity of cold sintered Co
(Materials Science Forum, 2004)
Cold sintering of cobalt powder (up to 1.2 GPa) was accompanied by measurements of density and thermal diffusivity. Dependence of density change upon pressing pressure is derived. Thermal diffusivity of the material was ...
The influence of the solid/liquid ratio on the point of zero charge of alumina
(Materials Science Forum, 2004)
The point of zero charge (pH(pzc)) of three samples of commercial aluminum oxide in aqueous KNO3 (10(-3) - 10(-1) mol/dm(3)) solution was investigated using batch equilibration, mass titration and acid-base titration ...
The effect of reversing current on the properties of copper and electrolytic copper powder II. The apparent density and flowability of powders
(Materials Science Forum, 2004)
The apparent density and flowability of copper powder are related to the structure of powder particles and the reversing current (RC) regimes. It was shown that the apparent density of the powders increases with the increase ...
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 ...
Influence of the cation distribution on the physical properties of the diluted magnetics Li1.33Ti1.67O4/Co2TiO4
(Materials Science Forum, 2004)
Spinel samples of Li1.33xCo2-2xTi1+0.67xO4 crystallize in two space groups: Fd 3 m for 0less than or equal tox:less than or equal to0.40 and x=1, and P4(3)32 for 0.50less than or equal toxless than or equal to0.875. In ...
Plasma oxidation of salt bath nitrided C 15 steel samples
(Materials Science Forum, 2004)
Quenched and tempered samples made of plain carbon steel C 15 were salt bath nitrided at 580(0)C for 210 minutes and subsequently water quenched. The nitrided samples were half cut to obtain ail untreated surface that was ...
The effect of various parameters on the structure of W-Ti thin films
(Materials Science Forum, 2004)
The properties of W-Ti thin films/coatings deposited by sputtering on various substrates have been studied. Structural analyses were made by X-ray diffraction and scanning tunneling microscopy. The results have shown that ...
Effects of stacking sequence on the strength of cross-ply and quasi-isotropic carbon/epoxy laminates
(Materials Science Forum, 2004)
The effect of stacking sequence on the tensile strength of carbon/epoxy laminate was studied. The differences in effective strength values between cross plies and quasi-isotropic laminates, with the same lay-up and with ...