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Title: Dynamic evolution of liquid-liquid phase separation during continuous cooling

Abstract

Solidification from a multiphase fluid involves many unknown quantities due to the difficulty of predicting the impact of fluid flow on chemical partitioning. Real-time x-ray radiography has been used to observe liquideliquid phase separation in Al90In10 prior to solidification. Quantitative image analysis has been used to measure the motion and population characteristics of the dispersed indium-rich liquid phase during cooling. Here we determine that the droplet growth characteristics resemble well known steady-state coarsening laws with likely enhancement by concurrent growth due to supersaturation. Simplistic views of droplet motion are found to be insufficient until late in the reaction due to a hydrodynamic instability caused by the large density difference between the dispersed and matrix liquid phases.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1239535
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Chemistry and Physics; Journal Volume: 153
Country of Publication:
United States
Language:
English
Subject:
Alloys; Phase transitions; Solidification; X-ray microscopy

Citation Formats

Imhoff, S. D., Gibbs, P. J., Katz, M. R., Ott, T. J., Patterson, B. M., Lee, W. -K., Fezzaa, K., Cooley, J. C., and Clarke, A. J.. Dynamic evolution of liquid-liquid phase separation during continuous cooling. United States: N. p., 2015. Web. doi:10.1016/j.matchemphys.2014.12.039.
Imhoff, S. D., Gibbs, P. J., Katz, M. R., Ott, T. J., Patterson, B. M., Lee, W. -K., Fezzaa, K., Cooley, J. C., & Clarke, A. J.. Dynamic evolution of liquid-liquid phase separation during continuous cooling. United States. doi:10.1016/j.matchemphys.2014.12.039.
Imhoff, S. D., Gibbs, P. J., Katz, M. R., Ott, T. J., Patterson, B. M., Lee, W. -K., Fezzaa, K., Cooley, J. C., and Clarke, A. J.. Sun . "Dynamic evolution of liquid-liquid phase separation during continuous cooling". United States. doi:10.1016/j.matchemphys.2014.12.039.
@article{osti_1239535,
title = {Dynamic evolution of liquid-liquid phase separation during continuous cooling},
author = {Imhoff, S. D. and Gibbs, P. J. and Katz, M. R. and Ott, T. J. and Patterson, B. M. and Lee, W. -K. and Fezzaa, K. and Cooley, J. C. and Clarke, A. J.},
abstractNote = {Solidification from a multiphase fluid involves many unknown quantities due to the difficulty of predicting the impact of fluid flow on chemical partitioning. Real-time x-ray radiography has been used to observe liquideliquid phase separation in Al90In10 prior to solidification. Quantitative image analysis has been used to measure the motion and population characteristics of the dispersed indium-rich liquid phase during cooling. Here we determine that the droplet growth characteristics resemble well known steady-state coarsening laws with likely enhancement by concurrent growth due to supersaturation. Simplistic views of droplet motion are found to be insufficient until late in the reaction due to a hydrodynamic instability caused by the large density difference between the dispersed and matrix liquid phases.},
doi = {10.1016/j.matchemphys.2014.12.039},
journal = {Materials Chemistry and Physics},
number = ,
volume = 153,
place = {United States},
year = {Sun Mar 01 00:00:00 EST 2015},
month = {Sun Mar 01 00:00:00 EST 2015}
}