Coarsening in solid-liquid mixtures: Overview of experiments on shuttle and ISS

W. M.B. Duval, R. W. Hawersaat, T. Lorik, J. Thompson, E. B. Gulsoy, P. W. Voorhees

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The microgravity environment on the Shuttle and the International Space Station (ISS) provides the ideal condition to perform experiments on Coarsening in Solid-Liquid Mixtures (CSLM) as deleterious effects such as particle sedimentation and buoyancy-induced convection are suppressed. For an ideal system such as Lead-Tin in which all the thermophysical properties are known, the initial condition in microgravity of randomly dispersed particles with local clustering of solid Tin in eutectic liquid Lead-Tin matrix, permitted kinetic studies of competitive particle growth for a range of volume fractions. Verification that the quenching phase of the experiment had negligible effect of the spatial distribution of particles is shown through the computational solution of the dynamical equations of motion, thus insuring quench-free effects from the coarsened microstructure measurements. The low volume fraction experiments conducted on the Shuttle showed agreement with transient Ostwald ripening theory, and the steady-state requirement of LSW theory was not achieved. More recent experiments conducted on ISS with higher volume fractions have achieved steady-state condition and show that the kinetics follows the classical diffusion limited particle coarsening prediction and the measured 3D particle size distribution becomes broader as predicted from theory.

Original languageEnglish (US)
Title of host publicationMaterials Science and Technology Conference and Exhibition 2013, MS and T 2013
Pages2745-2752
Number of pages8
Volume4
StatePublished - Feb 11 2014
EventMaterials Science and Technology Conference and Exhibition 2013, MS and T 2013 - Montreal, QC, Canada
Duration: Oct 27 2013Oct 31 2013

Other

OtherMaterials Science and Technology Conference and Exhibition 2013, MS and T 2013
CountryCanada
CityMontreal, QC
Period10/27/1310/31/13

Keywords

  • Coarsening
  • Kinetics
  • Microgravity
  • Ostwald ripening

ASJC Scopus subject areas

  • Mechanics of Materials

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    Duval, W. M. B., Hawersaat, R. W., Lorik, T., Thompson, J., Gulsoy, E. B., & Voorhees, P. W. (2014). Coarsening in solid-liquid mixtures: Overview of experiments on shuttle and ISS. In Materials Science and Technology Conference and Exhibition 2013, MS and T 2013 (Vol. 4, pp. 2745-2752)