Kinetics of phase separation by spinodal decomposition in mixtures of telechelic hydroxy-terminated polyisobutylene and poly(tetrahydrofuran)

1991 ◽  
Vol 24 (17) ◽  
pp. 4852-4856 ◽  
Author(s):  
Hak Soo Lee ◽  
Thein Kyu ◽  
Avi Gadkari ◽  
Joseph P. Kennedy
Keyword(s):  
Phase Separation ◽  
Spinodal Decomposition ◽  
Kinetics Of

Kinetics of phase separation at the early stage of spinodal decomposition in epoxy resin modified with PEI blends

2008 ◽  
Vol 287 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Wenjun Gan ◽  
Yingfeng Yu ◽  
Xiaoyun Liu ◽  
Minghai Wang ◽  
Shanjun Li
Keyword(s):  
Phase Separation ◽  
Epoxy Resin ◽  
Spinodal Decomposition ◽  
Early Stage ◽  
Kinetics Of

Spinodal Decomposition in Fe-Cr-Co Alloys

1982 ◽  
Vol 21 ◽  
Author(s):  
S. S. Brenner ◽  
P. P. Camus ◽  
M. K. Miller ◽  
W. A. Soffa
Keyword(s):  
Phase Separation ◽  
Spinodal Decomposition ◽  
Atom Probe ◽  
Continuous Phase ◽  
Miscibility Gap ◽  
Two Phase ◽  
Probe Field ◽  
Long Wavelength ◽  
Composition Fluctuations ◽  
Kinetics Of

Continuous phase separation or spinodal decomposition occurs within a miscibility gap through the selective amplification of long wavelength concentration waves to produce a two-phase modulated microstructure. To comprehensively study the formation of these modulated microstructures and the kinetics of continuous phase separation the behavior of the composition fluctuations in the decomposing material should be monitored directly. The atom probe field-ion microscope is an ideal instrument for this type of investigation of fine-scale microstructures because of its ultra-high spatial resolution and microchemical analysis capability.

KINETICS OF PHASE SEPARATION IN CONFINED GEOMETRIES

2005 ◽  
Vol 19 (19n20) ◽  
pp. 919-948 ◽  
Author(s):  
SANJAY PURI
Keyword(s):  
Phase Separation ◽  
Surface Morphology ◽  
Spinodal Decomposition ◽  
Surface Potential ◽  
Numerical Results ◽  
Coarse Grained ◽  
Confined Geometries ◽  
Equilibrium Surface ◽  
Kinetics Of

We review analytical and numerical results for the kinetics of phase separation in confined geometries. It is often the case that a confining surface has a preferential attraction for one of the components of a segregating mixture. The equilibrium surface morphology is either partially wet or completely wet, depending on the strength of the surface potential. The dynamical interplay of wetting and phase separation is referred to as surface-directed spinodal decomposition (SDSD), and is of considerable technological importance. We discuss the modeling of SDSD at both the microscopic and coarse-grained levels. We also present results for SDSD in both semi-infinite and confined geometries.

Crystallization kinetics of amorphous nanostructured Pd40.5Ni40.5P19 alloys

2001 ◽  
Vol 16 (3) ◽  
pp. 797-802 ◽  
Author(s):  
H. W. Ngai ◽  
C. C. Leung ◽  
W. H. Guo ◽  
H. W. Kui
Keyword(s):  
Phase Separation ◽  
Crystal Growth ◽  
Thermal Annealing ◽  
Amorphous Phase ◽  
Spinodal Decomposition ◽  
Crystallization Kinetics ◽  
Annealing Temperature ◽  
Eutectic Growth ◽  
Precipitation Reaction ◽  
Kinetics Of

When a homogeneous amorphous Pd40.5Ni40.5P19 alloy was subjected to thermal annealing for 30 min at various temperatures, novel microstructures were observed. At an annealing temperature of 603 K, phase separation of the amorphous phase dominated. At 628 K, a precipitation reaction proceeded first. After its completion, a eutectic growth set in. At 638 K, metastable spinodal decomposition occurred first, followed by a eutectic growth. Finally at 673 K, crystal growth of crystalline spinodal network was fast enough to compete with a eutectic growth.

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