Fast low-temperature consolidation of bulk nanometric ceramic materials
Fast low-temperature consolidation of bulk nanometric ceramic materials
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DOI：
10.1016/j.scriptamat.2005.11.015
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发表时间：
2006-03-01
影响因子：
6
通讯作者：
Munir, ZA
中科院分区：
文献类型：
--
作者：
Anselmi-Tamburini, U;Garay, JE;Munir, ZA
采用高压改性场活化烧结（放电等离子烧结）方法，获得了晶粒尺寸接近10 nm的致密氧化锆和氧化铈陶瓷。已使用高达1 GPa的压力和5分钟的烧结时间。对于完全稳定的氧化锆，致密化在低至930摄氏度的温度下进行，对于掺杂钐的二氧化铈，致密化在815摄氏度的温度下进行，对于纯二氧化铈，致密化在675摄氏度的温度下进行。所有材料的相对密度均大于98%。该方法克服了粉末团聚的有害影响，为这些块状形式的陶瓷产生细晶粒尺寸。(c)2005 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
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.