In-situ measurements of lattice expansion related to defect generation during flash sintering

J. M. Lebrun, C. S. Hellberg, S. K. Jha, W. M. Kriven, A. Steveson, K. C. Seymour, N. Bernstein, S. C. Erwin, R. Raj

Research output: Contribution to journalArticlepeer-review

Abstract

We report results from in-situ measurements of lattice expansion during flash sintering of 3 mol% yttria stabilized tetragonal zirconia taken at the Advanced Photon Source, Argonne National Laboratory. The expansion is anisotropic, with the relative expansion of the a-lattice constant exceeding that of the c-lattice constant. The anisotropic expansion cannot be explained by thermal expansion and is consistent with predictions from ab-initio calculations based upon the generation of vacancy-interstitial pairs of zirconium and oxygen.

Original languageEnglish (US)
Pages (from-to)4965-4970
Number of pages6
JournalJournal of the American Ceramic Society
Volume100
Issue number11
DOIs
StatePublished - Nov 2017

Keywords

  • Field Assisted Sintering Technology (FAST)
  • X-ray methods
  • modeling/model
  • thermal expansion

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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