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

被引：82
作者：
Lebrun, J. -M. [1 ,2 ]
Hellberg, C. S. [3 ]
Jha, S. K. [1 ]
Kriven, W. M. [4 ]
Steveson, A. [4 ]
Seymour, K. C. [4 ]
Bernstein, N. [3 ]
Erwin, S. C. [3 ]
Raj, R. [1 ]
机构：
[1] Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA
[2] St Gobain Innovat Mat NRDC, Northborough, MA USA
[3] Naval Res Lab, Ctr Computat Mat Sci, Washington, DC 20375 USA
[4] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL USA
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2017年 / 100卷 / 11期
关键词：
Field Assisted Sintering Technology (FAST); modeling/model; thermal expansion; X-ray methods; TEMPERATURE; ZIRCONIA;
D O I：
10.1111/jace.15071
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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.
引用
收藏
页码：4965 / 4970
页数：6
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