Effect of growth conditions and compositions on the morphology and stability of the solid-liquid interface of BiSrCaCuO grown by a floating zone method

1997 ◽  
Vol 282-287 ◽  
pp. 865-866 ◽  
Author(s):  
G.D. Gu ◽  
G.J. Russell ◽  
N. Koshizuka
Keyword(s):  
Growth Conditions ◽  
Liquid Interface ◽  
Floating Zone ◽  
Zone Method ◽  
Floating Zone Method ◽  
Solid Liquid Interface ◽  
Solid Liquid

Control of the solid-liquid interface during growth of a Ce-doped Gd 2 Si 2 O 7 crystal by the traveling solvent floating zone method

2017 ◽  
Vol 468 ◽  
pp. 465-468
Author(s):  
Satoshi Watauchi ◽  
Kohei Matsuya ◽  
Masanori Nagao ◽  
Isao Tanaka ◽  
Shunsuke Kurosawa ◽  
...  
Keyword(s):  
Liquid Interface ◽  
Floating Zone ◽  
Zone Method ◽  
Floating Zone Method ◽  
Solid Liquid Interface ◽  
Solid Liquid

Crystal Growth Of A Decagonal AI-Co-Ni Quasicrystal

1998 ◽  
Vol 553 ◽  
Author(s):  
J.Q. Guo ◽  
T. J. Sato ◽  
T. Kimura ◽  
T. Hirano ◽  
A. P. Tsai
Keyword(s):  
Liquid Interface ◽  
Floating Zone ◽  
Solute Redistribution ◽  
Zone Method ◽  
Decagonal Quasicrystal ◽  
X Ray ◽  
State Growth ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Very High

AbstractWe have grown a decagonal single quasicrystal with a size of centimeter order in an A172Co16Ni12 alloy by floating zone method at a growth rate of 0.5 mm/h. The single decagonal quasicrystal has been inspected by Laue X-ray as well as neutron diffraction, revealing a very high quasicrystalline quality. By quenching the liquid during growth, a flat solid-liquid interface has been directly observed. There exists solute redistribution at the growing solid-liquid interface. At steady state growth Al is enriched and Co, Ni are depleted in front of solid-liquid interface. Solute partition ratios of Al, Co and Ni were determined to be about 0.91, 1.57 and 1.08, respectively.

THE EFFECT OF GROWTH CONDITIONS UPON THE SOLIDIFICATION OF A BINARY ALLOY

1956 ◽  
Vol 34 (1) ◽  
pp. 96-121 ◽  
Author(s):  
W. A. Tiller ◽  
J. W. Rutter
Keyword(s):  
Binary Alloy ◽  
Impurity Content ◽  
Growth Conditions ◽  
Orientation Dependence ◽  
Liquid Interface ◽  
Critical Ratio ◽  
Liquid Lead ◽  
Careful Study ◽  
Solid Liquid Interface ◽  
Solid Liquid

This investigation provides both a theoretical and an experimental analysis of the factors which affect the mode of solidification of a binary alloy. These factors are: (i) the concentration of solute in the melt (C0); (ii) the rate of solidification (R); (iii) the temperature gradient in the melt at the solid–liquid interface (G). Extremely high purity lead was produced by zone refining and, from this material, crystals containing known concentrations of tin, silver, and gold were grown under a range of well-controlled growth conditions. The mode of solidification was investigated by a careful study of the change in appearance of the solid–liquid interface with a change in growth conditions. For a crystal containing a specific C0 of solute it was observed that (a) the transition from a smooth interface to a cellular interface occurred at a critical ratio of G to R; (b) the width of the cells varied inversely as G and inversely as R; (c) the transition from a cellular interface to a dendritic interface exhibited a large orientation dependence, and for a constant orientation breakdown occurred at a critical ratio of G to [Formula: see text]. The experimental observations confirm both the existence of a solute-rich layer of liquid adjacent to the solid-liquid interface and its quantitative features. From this agreement with theory the diffusion coefficients of tin, silver, and gold in liquid lead at 327 °C. are determined. This work serves to illustrate the effect of extremely small amounts of particular solutes upon the development of substructures during solidification. A technique is proposed for obtaining a measure of the purity of low impurity content alloys.

GROWTH CONDITIONS FOR STABILITY OF A CELLULAR SOLID-LIQUID INTERFACE

1957 ◽  
Vol 35 (10) ◽  
pp. 1223-1227 ◽  
Author(s):  
E. L. Holmes ◽  
J. W. Rutter ◽  
W. C. Winegard
Keyword(s):  
Freezing Temperature ◽  
Growth Conditions ◽  
Solute Concentration ◽  
Critical Value ◽  
Liquid Interface ◽  
Cellular Solid ◽  
First Approximation ◽  
Comparison Of The Results ◽  
Solid Liquid Interface ◽  
Solid Liquid

Samples of zone-refined lead containing various amounts of silver as solute were solidified under well-controlled conditions to study the transition from cellular to dendritic freezing as a function of composition, speed of freezing, temperature gradient in the melt during freezing, and crystallographic orientation of the solidifying crystal. A comparison of the results of this investigation with those of Tiller and Rutter (1956) on alloys of tin in lead shows that to a first approximation the onset of dendritic freezing under any given growth conditions occurs at a critical value of the average solute concentration in the liquid at the solid–liquid interface, independent of whether the solute present is tin or silver.

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