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

被引：85

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

页码：4965 / 4970

页数：6

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