Results 311 to 320 of about 62,161 (331)
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The large concentration fluctuations in the liquid eutectic systems with deep eutectic points
Journal of Non-Crystalline Solids, 2002Abstract The electrical resistivity, ρ, was investigated from 1373 K to the melting temperature for liquid Au–Ge and Ag–Ge alloys, having eutectic temperatures that are far lower than the melting temperatures of the respective constituent metals (‘deep eutectic point’).
Motoshige Ikeda +3 more
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2016
AbstractThis article begins with a schematic illustration of a eutectic system in which the two components of the system have the same crystal structure. Eutectic systems form when alloying additions cause a lowering of the liquidus lines from both melting points of the pure elements.
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AbstractThis article begins with a schematic illustration of a eutectic system in which the two components of the system have the same crystal structure. Eutectic systems form when alloying additions cause a lowering of the liquidus lines from both melting points of the pure elements.
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Eutectic formation in the Ni-Al system
Journal of Crystal Growth, 1994Abstract Directional solidification studies have been carried out on Ni-Al alloys at the eutectic and at off-eutectic compositions. This system has a peritectic reaction at a composition and temperature very close to the eutectic reaction and hence three different solid phases β, γ, and γ′, can form from the liquid at near the same temperature ...
J.H. Lee, J.D. Verhoeven
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Photovoltaic Cooling System with Eutectic Storage
1987In this paper a photovoltaic cooling system for use in the vaccine cold chain in remote areas is presented. To avoid an expensive lead acid battery with its maintenance requirements an eutectic storage was chosen. The compressor type cooling unit with dc drive is powered by a low cost dc-dc converter, which was specially designed for this application ...
B. Herrmann +4 more
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Binary Liquid Crystal Systems with Two Eutectics
Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics, 1987Abstract Some binary liquid crystal mixtures based on phenyl-pyrimidine derivatives are investigated. Some of these derivatives are new and were found to have SmC or SmC* phases. They exhibit unusual binary phase diagrams like the existence of two eutectics and induced smectic A and smectic C phases.
N. K. Sharma +5 more
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On metastable eutectics in binary salt systems
Recueil des Travaux Chimiques des Pays-Bas, 1947AbstractThe eutectic in any given binary system cannot be derived from the melting point and heat of fusion of the components. Formulae based upon an ideal form of the melting‐point curves cannot of course give more than a rough approximation.When one of the components in a binary system occurs in two crystalline modifications, a metastable eutectic ...
A. E. Korvezee +2 more
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Secondary Supercooling in Binary Eutectic Alloy Systems
Metal Science, 1975AbstractIn two previous communications the authors reported on the primary supercooling results obtained for bulk samples of several binary eutectic alloys. It was shown that primary supercooling, when determined from the arrest or reversal point on a continuous cooling curve, is dependent upon the cooling rate and the alloy composition The nucleation ...
W. V. Youdelis, S. P. Iyer
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Thermodynamically stable states in eutectic systems
Technical Physics, 1997It is shown that in a binary system in which the liquid-solid phase transition is described by a eutectic phase diagram, there are temperature and concentration regions in the liquid state with different thermodynamic stability. These regions are separated by bell-shaped decay and spinodal curves.
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Eutectic decomposition in the goldsilicon system
Materials Science and Engineering, 1971Abstract Using a gravity segregation technique it has been shown that the eutectic composition in the goldsilicon system occurs at 17.9 at. % silicon. When an alloy of the eutectic composition is quenched from the liquid phase a mixture of gold and a metastable phase designated “δ” is formed.
G.A. Andersen +3 more
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Eutectic solidification in the NaF-MgF2 system
Journal of Materials Science, 1971The compound NaMgF3 occurs in the system NaF-MgF2 and forms a eutectic with either component. The eutectic between NaF and NaMgF3 has been unidirectionally solidified and the phase morphology and crystallography examined by optical and electron microscopy coupled with electron diffraction.
M. W. A. Bright, M. H. Lewis
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