Results 161 to 170 of about 334,177 (210)

Compositional patterning in irradiated immiscible alloys

Surface Science, 2002
Abstract The spontaneous formation of surface compositional patterning of quenched binary alloys driven by irradiation is numerically studied by means of a phenomenologically modified Cahn–Hilliard type equation for the local concentration field. In the present model the irradiation effect is modeled as a ballistic mixing with an average distance of ...
Yoshihisa Enomoto, Masataka Sawa
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Mechanical Alloying of Immiscible Elements

1992
We propose for the first time, a quantitative thermodynamic explanation for the formation of solid-solutions of immiscible elements by mechanical alloying. It is shown how codeformation of a hard and a soft phase results in the formation of disc or needle shape particles possessing large aspect ratios.
A. R. Yavari, P. J. Desre
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A verification of immiscibility in InGaAsP quaternary alloys

Journal of Crystal Growth, 1988
Abstract Immiscibility in the InGaAsP quaternary alloys is studied by using liquid phase epitaxy. Growths are performed on GaP substrates instead of GaAs substrates for several melt compositions, which produce lattice matched alloys with GaAs when the growths are done on GaAs substrates.
Shigeyasu Tanaka, Noriaki Amano, Kazumasa Hiramatsu, Isamu Akasaki   +3 more
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Synthesis of Immiscible Alloys by the Mixalloying Process

Journal of Engineering for Industry, 1989
Dispersed-phase microstructures of the immiscible Pb-Zn, Pb-Zn-Sn and Pb-Al alloys were produced by the Mixalloying Process [1]. The particle size was found to follow the log-normal statistical distribution and the mean particle diameter correlated well with the –3/5th power of the Weber number. Furthermore, computational simulation studies showed that
Nam P. Suh, Nannaji Saka, Chong N. Chu, S. Tu¨rker Oktay   +3 more
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Surface-Confined Alloy Formation in Immiscible Systems

Physical Review Letters, 1995
Elements which are immiscible in the bulk have been found to form stable two-dimensional mixtures at the free surface. Here we show that such surface-confined mixing is expected quite generally in systems which are dominated by the atomic size mismatch.
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Heterogeneous nucleation in liquid immiscible alloys

, 2010
Alloys being immiscible in the liquid state decompose into two liquid phases during cooling through the miscibility gap. In contrast to solidification where the solid phase is generally nucleated at inocculants or container walls, liquid immiscible ...
Köhler, Markus, Ratke, Lorenz
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Segregation and immiscibility in liquid binary alloys

Reports on Progress in Physics, 1997
An overview of the thermophysical properties of segregating and demixing liquid binary alloys is presented encompassing the simple approaches that are commonly used by physicists, chemists and metallurgists in general. The various experimental and theoretical information available for such systems are put together to establish a respectable ...
R N Singh, F Sommer
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IMPINGEMENT CASTING PROCESS OF IMMISCIBLE ALLOYS

Advanced Manufacturing Processes, 1987
ABSTRACT Experimental work on impingement casting process of Pb-Zn, Pb-Zn-Sn and Al-Pb systems was carried out. Rapid mixing of immiscible liquid metals was achieved in an arrow-shaped mixing chamber due to vigorous turbulence. The particle size distribution in the castings fitted lognormal curve well.
C.N. Chu, T. Oktay, N. Saka, N.P. Suh
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Strain Stabilized Alloying of Immiscible Metals in Thin Films

Physical Review Letters, 1995
We report on the structure and composition of codeposited thin Ag and Cu films on a Ru(0001) substrate. All three metals are immiscible in their bulk forms, however, monolayer films of Ag and Cu are observed to alloy on Ru(0001). In the dilute Cu case, preferential formation of the alloy is found.
, Stevens, , Hwang
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Formation of Immiscible Alloy Powders with Egg-Type Microstructure

Science, 2002
The egg-type core microstructure where one alloy encases another has previously been obtained during experiments in space. Working with copper-iron base alloys prepared by conventional gas atomization, we were able to obtain this microstructure under gravity conditions.
Wang, C. P., Liu, X. J., Ohnuma, I., Kainuma, R., Ishida, K.   +4 more
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