Journal of Materials Science

, Volume 28, Issue 20, pp 5414–5425 | Cite as

The engulfment of foreign particles by a freezing interface

  • R. Asthana
  • S. N. Tewari


The interactions of second-phase particles, liquid droplets or gas bubbles with a solidification front form the basis of various materials synthesis and purification processes and the design of microstructures in cast metal-matrix composites, as well as frost heaving and biological cell interactions. The physical mechanisms of this interaction phenomenon are based upon surface thermodynamic factors, solidification parameters, and fluid dynamic effects such as fluid drag and buoyancy. An overview is presented of the role of various factors which determine the nature as well as the kinetics of foreign particle-solidification front interactions, and the current status and limitations of the various theoretical models of the phenomenon.


Physical Mechanism Dynamic Effect Cell Interaction Purification Process Liquid Droplet 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



Critical velocity for particle engulfment


Latent heat of fusion


Atomic radius


Atomic volume


Diffusion coefficient in the liquid




Particle radius


Entropy of fusion


Density of the solid


Density of the liquid


Density of the particle


Boltzmann's constant


Difference in the specific volumes of solid and liquid


Temperature gradient


Critical gap thickness


Radius of surface bump on particle


Surface energy of solid-liquid interface


Surface energy of particle-liquid interface


Surface energy of solid-particle interface


Viscosity of the melt


Acceleration due to gravity


Density difference between particle and liquid


Hamaker constant




Thermal conductivity of the particle


Thermal conductivity of the liquid


Bulk concentration of the liquid


Slope of liquidus line


Partition coefficient


Specific heat of the particle


Specific heat of the liquid


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Copyright information

© Chapman & Hall 1993

Authors and Affiliations

  • R. Asthana
    • 1
  • S. N. Tewari
    • 1
  1. 1.Chemical Engineering DepartmentCleveland State UniversityClevelandUSA

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