Graded evolution of anisotropic microstructure during sintering from crystal-oriented powder compact

被引：0

作者：

Baba, Shoko ^{[1
]}

Maitre, Alexandre ^{[2
]}

Pradeilles, Nicolas ^{[2
]}

Antou, Guy ^{[2
]}

Saito, Nobuo ^{[1
]}

Tanaka, Satoshi ^{[1
]}

机构：

[1] Nagaoka Univ Technol, Dept Mat Sci & Technol, Niigata, Japan

[2] Univ Limoges, Limoges, France

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2020年 / 17卷 / 02期

关键词：

ROTATING MAGNETIC-FIELD; TEMPLATED GRAIN-GROWTH; PIEZOELECTRIC CERAMICS; ELECTRICAL-PROPERTIES; ALUMINA CERAMICS; ALPHA-ALUMINA; ORIENTATION; TEXTURE; ZNO; FABRICATION;

D O I：

10.1111/ijac.13360

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：

Anisotropic sintering, including shrinkage and grain growth, was examined for c-axis-oriented (Sr,Ca)(2)NaNb5O15 (SCNN) ceramics, which were prepared by colloidal processing under a magnetic field. In the c-axis-oriented SCNN powder compact, shrinkage and grain growth along the c-axis were higher than those along the a-axis. The anisotropic microstructural development was clearly associated with anisotropic sintering shrinkage. X-ray diffraction, scanning electron microscopy, and energy back scattering diffraction showed that the grain growth of oriented particles by including random grains contribute to the development of the oriented microstructure. Finally, the highly crystal-oriented SCNN ceramics with a densified microstructure were obtained through anisotropic sintering. These results clearly showed the potential to develop a well-defined anisotropic microstructure during sintering by designing and controlling the particle packing structure in a powder compact.

引用

页码：677 / 684

页数：8

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