An Analysis of the Individual Grain Structure of an Oxide Heated using Microwave Radiation and Heated Conventionally,

Abstract

This work examines the structure of an oxide material heated conventionally and in a 2.45 GHz electromagnetic field. Also examined is the structure of the initial starting powder. Of particular interest is the surface structure and the interior bulk structure. TEM analysis indicates that the particle structure differs depending on the processing technique. Based on these findings, a preliminary heating model is introduced which is based on the presence of a liquid phase during sintering. The presence of this liquid phase may account for the apparent lower activation energy for sintering others have reported since their work presumes sintering is due to solid state processes.

Document Details

Document Type
Technical Report
Publication Date
Apr 27, 1992
Accession Number
ADP007722

Entities

People

  • M. Rader
  • T. T. Meek
  • Xiaoxuan Zhang

Organizations

  • University of Tennessee system

Tags

DTIC Thesaurus Topics

  • Absorbers (Materials)
  • Advanced Materials
  • Electromagnetic Fields
  • Engineered Materials
  • Heat Of Activation
  • Liquid Phases
  • Liquids
  • Materials
  • Materials Processing
  • Microwaves
  • Phase
  • Radiation
  • Sintering
  • Solid State Processes

Readers

  • Computational Modeling and Simulation
  • Materials Science and Engineering.
  • Metallurgy