DEVELOPMENT OF TEXTURED MICROSTRUCTURES IN CERAMICS WITH LARGE THERMAL-EXPANSION ANISOTROPY

被引：22

作者：

PAULIK, SW ^{[1
]}

FABER, KT ^{[1
]}

FULLER, ER ^{[1
]}

机构：

[1] NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1994年 / 77卷 / 02期

关键词：

D O I：

10.1111/j.1151-2916.1994.tb07014.x

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：

Fe2TiO5 exhibits a high degree of anisotropy in both thermal expansion and paramagnetic susceptibility. Anisotropy in paramagnetic susceptibility allows textured microstructures to be produced using magnetically-assisted grain alignment during sample fabrication. The resulting solid-state sintered aligned samples had a b-axis orientation coefficient of 3.33 (vs 6.60 for an aligned powder-epoxy suspension) where an orientation coefficient of 1 represents a randomly-oriented sample. This texturing reduced the residual stresses generated from the large thermal expansion anisotropy of the control samples, as evidenced by reduced microcracking and morphological texturing of the aligned microstructure.

引用

页码：454 / 458

页数：5

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