Microstructure evolution during field-assisted sintering of zirconia spheres

D. Demirskyi, H. Borodianska, S. Grasso, Y. Sakka, O. Vasylkiv

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

The microstructure evolution during microwave-assisted sintering and spark plasma sintering of 50 μm spherical powder is presented. The two microstructures formed are alike, and show unexpected details that cannot be explained just by conventional thermal and pressure effects; one also has to consider "field" effects. This also suggests that the driving force is similar. An explanation and analysis of the microstructure evolution is attempted based on the enhancement of the conductivity of zirconia when the heating temperature increases. The consequences are possible discharge effects at lower heating temperatures and high reversed heating gradients above 800-850 °C.

Original languageEnglish
Pages (from-to)683-686
Number of pages4
JournalScripta Materialia
Volume65
Issue number8
DOIs
Publication statusPublished - 2011 Oct
Externally publishedYes

Keywords

  • Ceramics
  • Microwave heating
  • SPS
  • Sintering
  • Zirconia

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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