On the possibility of microwave applications in the powder processing and testing of selected tungsten compounds

J. Pfeifer, B. A. Kiss, P. Tekula-Buxbaum, K. Vadasdi

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Abstract

Starting materials for tungsten production (APT, AMT, WO3·H2O, and stoichiometric and substoichiometric dehydrated deammoniated powders) have been treated with microwave power. The increase in temperature has been registered. Time-temperature plots have been recorded. The temperature slopes in the room-temperature range have been compared with room-temperature dielectric-loss data at microwave frequencies. Some perspectives of microwave powder processing and test methods based on the varying microwave-transparency (dielectric-loss factor) of the materials involved are shown. The microwave calcination of APT is demonstrated. Dehydration process can easily be followed.

Original languageEnglish
Pages (from-to)27-33
Number of pages7
JournalInternational Journal of Refractory Metals and Hard Materials
Volume12
Issue number1
DOIs
Publication statusPublished - Jan 1 1993

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ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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