Fundamental Issues in Microwave Processing of Ceramics: Modeling and Experiments

Abstract

The thermal conductivity of ZnO with different particle sizes (micron, submicron and nano) was measured using the laser flash technique. As the "green" samples were heated from room temperature to 600 degrees C and 1000 degrees C and then cooled down to room temperature, the thermal conductivity was measured in sim. A model for inter-particle neck growth was developed based on mass transfer to the neck region of a powder as a result of known temperature gradient. By combining this model with a three-dimensional numerical code, the thermal conductivity of ZnO was calculated. Excellent agreement between the theoretical calculation and experimental data was found.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2000
Accession Number
ADA382868

Entities

People

  • Sidney Yip
  • Yuval Carmel

Organizations

  • University of Maryland

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Band Structures
  • Conductivity
  • Creep
  • Crystal Lattice Vibrations
  • Crystal Lattices
  • Crystal Structure
  • Crystallography
  • Crystals
  • Experimental Data
  • First Principles Calculations
  • Materials Science
  • Mechanical Properties
  • Mechanics
  • Molecular Dynamics
  • Multiscale Modeling
  • Physical Properties
  • Thermal Conductivity

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Plasma Physics.
  • Surface Engineering/Surface Coating Technology.

Technology Areas

  • Directed Energy