Synthesis and crystallization of anisotropic shaped ZrO2 nanocrystalline powders by hydrothennal process

被引：85

作者：

Noh, HJ

Seo, DS

Kim, H

Lee, JK

机构：

[1] Chosun Univ, Dept Met & Mat Engn, Kwangju 501759, South Korea

[2] Seoul Natl Univ, Sch Mat Engn, Seoul 151742, South Korea

来源：

MATERIALS LETTERS | 2003年 / 57卷 / 16-17期

关键词：

ZrO2 nanocrystalline powder; anisotropic shapes; hydrothermal process; tetragonal; monoclinic;

D O I：

10.1016/S0167-577X(02)01248-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The nanocrystalline ZrO2 powders with anisotropic shapes were synthesized from the amorphous zirconium hydroxide powder (P I) and the tetragonal zirconia powder (P2) by hydrothermal process with the reaction temperature range 150-250 degreesC and additive concentration 1, 5 M NaOH solutions. With increasing the reaction temperature, the particle shape was altered from spherical to spindle- or rod-like and the fraction of monoclinic phase increased. In 5 M NaOH solution, the particle shape was actively changed and the transformation to the monoclinic was faster than in I M NaOH solution. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：2425 / 2431

页数：7

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