Fast low-temperature consolidation of bulk nanometric ceramic materials

被引：260

作者：

Anselmi-Tamburini, U ^{[1
]}

Garay, JE ^{[1
]}

Munir, ZA ^{[1
]}

机构：

[1] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA

来源：

SCRIPTA MATERIALIA | 2006年 / 54卷 / 05期

基金：

美国国家科学基金会;

关键词：

nanostructured ceramics; rapid densification; zirconia; ceria; SPS;

D O I：

10.1016/j.scriptamat.2005.11.015

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Dense zirconia and ceria ceramics with grain sizes approaching 10 nm have been obtained using a high-pressure modification of the field activated sintering (spark plasma sintering). Pressures up to 1 GPa and sintering times of 5 min have been used. The densification has been performed at temperatures as low as 930 degrees C for fully-stabilized zirconia, 815 degrees C for samaria-doped ceria, and 675 degrees C for pure ceria. Relative densities greater than 98% were achieved for all materials. The method overcomes the deleterious effect of powder agglomeration, producing fine grain size for these ceramics in bulk form. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：823 / 828

页数：6

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