Cubic yttria stabilized zirconia sintering additive impacts: A comparative study

Andrew J. Flegler, Theodore E. Burye, Qing Yang, Jason D. Nicholas

Research output: Contribution to journalArticle

  • 18 Citations

Abstract

To evaluate the impact sintering additives have on the processing and performance of 8 mol% yttria stabilized zirconia (8YSZ), the 25-1525 °C sintering kinetics, phase purity, microstructure, and electrical properties of a single batch of 8YSZ powder surface-coated with 1, 3 and 5 mol% of barium, bismuth, calcium, cobalt, copper, iron, lithium, magnesium, manganese, nickel, strontium or zinc were investigated via constant heating rate dilatometry, X-ray diffraction, scanning electron microscopy, and AC impedance spectroscopy. For electrochemical applications where dense 8YSZ is required, iron was found to give the best combination of 8YSZ cubic zirconia phase stability, high oxygen ion conductivity, and enhanced densification kinetics. 5 mol% iron was found to reduce the 8YSZ sintering temperature by ∼150 °C.

LanguageEnglish (US)
Pages16323-16335
Number of pages13
JournalCeramics International
Volume40
Issue numberPB
DOIs
StatePublished - Dec 1 2014

Profile

Yttria stabilized zirconia
Sintering
ferrous sulfate
Iron
Bismuth
Strontium
Kinetics
Phase stability
Barium
Manganese
Cobalt
Nickel
Heating rate
Densification
Lithium
Zirconia
Powders
Magnesium
Zinc
Copper

Keywords

  • Dopant
  • Sintering additive
  • Sintering Aid
  • Zirconia

ASJC Scopus subject areas

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

Cite this

Cubic yttria stabilized zirconia sintering additive impacts : A comparative study. / Flegler, Andrew J.; Burye, Theodore E.; Yang, Qing; Nicholas, Jason D.

In: Ceramics International, Vol. 40, No. PB, 01.12.2014, p. 16323-16335.

Research output: Contribution to journalArticle

Flegler, Andrew J. ; Burye, Theodore E. ; Yang, Qing ; Nicholas, Jason D./ Cubic yttria stabilized zirconia sintering additive impacts : A comparative study. In: Ceramics International. 2014 ; Vol. 40, No. PB. pp. 16323-16335
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