Results 231 to 240 of about 5,425,138 (280)
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Cellular and dendritic growth. II
Journal of Crystal Growth, 1974Abstract A theoretical model is developed to explain the variation in cellular or dendritic tip temperatures with velocity and temperature gradient. It is shown that the undercooling can be considered to arise as a result of build up of average solute concentration ahead of the growth front depending mainly on the imposed temperature gradient ...
M.H. Burden, J.D. Hunt
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Effect of a forced flow on dendritic growth
Physical Review A, 1989The effects of a forced flow on dendritic growth rate are studied theoretically. By using a solvability condition one determines the eigenvalue C = p2V/Dd0 as a function of the velocity of the forced flow in the two-dimensional model. The results are compared critically with recent experiments.
, Bouissou, , Pelcé
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2002
Many of the alloys used in practice, such as steel, aluminum-copper alloys, nickel-base and copper-base alloys, are single phase alloys, which means that the final product of solidification is a solid solution. Depending on the thermal and compositional field, cellular or, in most practical cases, dendritic morphology will occur.
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Many of the alloys used in practice, such as steel, aluminum-copper alloys, nickel-base and copper-base alloys, are single phase alloys, which means that the final product of solidification is a solid solution. Depending on the thermal and compositional field, cellular or, in most practical cases, dendritic morphology will occur.
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The growth of dendrites in the mammalian brain
Zeitschrift f�r Anatomie und Entwicklungsgeschichte, 1969The histological features of developing dendrites are analyzed in age-graded series of cats, rats, rabbits, and opossums with the Golgi techniques. Growth cones and filopodia are consistent features of growing dendrites in the sensory nuclei, motor cranial nerve nuclei, brain stem reticular formation, cerebellar cortex, midbrain tectum, thalamus ...
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Canadian Journal of Physics, 1951
Dendritic growth of large single crystals of lead is revealed by decanting the remaining liquid at any required stage of the process of solidification. The direction of dendritic growth was determined as a function of crystallographic orientation and direction of solidification.
F. Weinberg, Bruce Chalmers
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Dendritic growth of large single crystals of lead is revealed by decanting the remaining liquid at any required stage of the process of solidification. The direction of dendritic growth was determined as a function of crystallographic orientation and direction of solidification.
F. Weinberg, Bruce Chalmers
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Electrolytic Growth of Silver Dendrites
Science, 1964The growth rates of silver dendrites formed in narrow capillaries by electrodeposition under various physical conditions have been determined. Dissolution of such dendrites as well as their growth can be reliably controlled. This principle may be used in the design of components for adaptive electronic systems.
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Dendritic and spheroidal growth
Acta Metallurgica, 1961Exact solutions to the diffusion equation are obtained which correspond to diffusion controlled growth of elliptical paraboloids (dendrites; forward growth with linear time dependence) and spheroids (growth with square root of time dependence). The elliptical dendrite includes as special cases the dendrite of circular cross-section and the dendrite ...
G Horvay, J.W Cahn
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Nucleation and Dendritic Growth in Undercooled Melts
MRS Proceedings, 1995ABSTRACTTechniques of containerless processing are applied to undercool and solidify metals and alloys. These techniques allow direct measurements of both the undercooling and the crystal growth velocity. Experimental results are presented for studies of nucleation of metastable crystalline phases and quasicrystals.
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Journal of Physics and Chemistry of Solids, 1963
Abstract The limiting 〈211〉 and 〈211〉 growth velocities have been measured as a function of melt undercooling for InSb dendrites containing two twin planes. From analysis of the data using a layer flow model, it is found that the kinetic rate constant for the interface is greater than 3 cm sec°C and that the effective interfacial energy is ...
R.G. Seidensticker, D.R. Hamilton
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Abstract The limiting 〈211〉 and 〈211〉 growth velocities have been measured as a function of melt undercooling for InSb dendrites containing two twin planes. From analysis of the data using a layer flow model, it is found that the kinetic rate constant for the interface is greater than 3 cm sec°C and that the effective interfacial energy is ...
R.G. Seidensticker, D.R. Hamilton
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Growth of noncrystallographic dendrites
Journal of Materials Research, 1992First time experimental evidence is presented for the steady state growth of dendrites away from their normal crystallographic growth directions. The evidence is shown for transparent dendrites in the succinonitrile system, which are induced to grow along wetting surfaces.
L.M. Fabietti, J.A. Sekhar
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