Densification of zirconium nitride by spark plasma sintering and high voltage electric discharge consolidation

A comparative analysis

G. Lee, M. S. Yurlova, D. Giuntini, E. G. Grigoryev, O. L. Khasanov, J. McKittrick, E. A. Olevsky

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The densification behavior of zirconium nitride powder is investigated for various temperature and pressure conditions imposed by spark plasma sintering and high voltage electric discharge consolidation techniques. The crystal structure, chemical composition, porosity, and grain size of the powders and processed specimens are analyzed by X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The outcomes of the two considered consolidation techniques are comparatively assessed. Vickers micro-hardness of the processed ZrN specimens is investigated, and hardness dependence on porosity is analyzed. The densification mechanism of ZrN consolidated by spark plasma sintering is revealed by applying the constitutive equation of the continuum theory of sintering, and it turns out to be a similar mechanism to hot pressing. Application of the sintering constitutive equations shows that the mechanism of ZrN densification by high voltage electric discharge consolidation method depends on the magnitude of the applied voltage.

Original languageEnglish
JournalCeramics International
Volume41
DOIs
Publication statusPublished - 28 Jul 2015

Fingerprint

Electric discharges
Spark plasma sintering
Densification
Zirconium
Nitrides
Consolidation
Constitutive equations
Powders
Electric potential
Sintering
Porosity
Hot pressing
Microhardness
Crystal structure
Hardness
X ray diffraction
Scanning electron microscopy
Chemical analysis
Temperature

Keywords

  • Field-assisted sintering
  • High voltage electric discharge consolidation
  • Spark plasma sintering
  • Zirconium nitride

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Densification of zirconium nitride by spark plasma sintering and high voltage electric discharge consolidation : A comparative analysis. / Lee, G.; Yurlova, M. S.; Giuntini, D.; Grigoryev, E. G.; Khasanov, O. L.; McKittrick, J.; Olevsky, E. A.

In: Ceramics International, Vol. 41, 28.07.2015.

Research output: Contribution to journalArticle

Lee, G. ; Yurlova, M. S. ; Giuntini, D. ; Grigoryev, E. G. ; Khasanov, O. L. ; McKittrick, J. ; Olevsky, E. A. / Densification of zirconium nitride by spark plasma sintering and high voltage electric discharge consolidation : A comparative analysis. In: Ceramics International. 2015 ; Vol. 41.
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