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

Journal Article · · Journal of the American Ceramic Society
DOI:https://doi.org/10.1111/jace.15071· OSTI ID:1398065
 [1];  [2];  [3];  [4];  [4];  [4];  [2];  [2];  [3]
  1. Department of Mechanical Engineering University of Colorado Boulder Colorado, Saint‐Gobain Innovative Materials ‐ NRDC Northboro Massachusetts
  2. Center for Computational Materials Science Naval Research Laboratory Washington, District of Columbia
  3. Department of Mechanical Engineering University of Colorado Boulder Colorado
  4. Department of Materials Science and Engineering University of Illinois Urbana Champaign Illinois
+ Show Author Affiliations

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.

Sponsoring Organization:
USDOE
Grant/Contract Number:
NONE; AC02-06CH11357
OSTI ID:
1398065
Journal Information:
Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 11 Vol. 100; ISSN 0002-7820
Publisher:
Wiley-BlackwellCopyright Statement
Country of Publication:
United States
Language:
English

References (14)

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Joule heating during flash-sintering journal August 2012
Electroluminescence and the measurement of temperature during Stage III of flash sintering experiments journal October 2015
Thermal Expansion of Platinum from 293 to 1900 K conference January 1972
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
Generalized Gradient Approximation Made Simple journal October 1996
The Use of the Pseudo-Voigt Function in the Variance Method of X-ray Line-Broadening Analysis journal August 1997
Flash Sintering of Nanograin Zirconia in <5 s at 850°C journal September 2010
Influence of the Field and the Current Limit on Flash Sintering at Isothermal Furnace Temperatures journal July 2013
Emergence and Extinction of a New Phase During On–Off Experiments Related to Flash Sintering of 3 YSZ journal January 2015
The Change of X‐ray Diffraction Peak Width During in situ Conventional Sintering of Nanoscale Powders journal October 2015
Broadening of Diffraction Peak Widths and Temperature Nonuniformity During Flash Experiments journal June 2016
Chemical Expansion: Implications for Electrochemical Energy Storage and Conversion Devices journal July 2014

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