Hydrothermal synthesis of nanocrystalline powders in the ZrO2-Y2O3-CeO2 system

被引：11

作者：

Shevchenko, A. V. ^{[1
]}

Dudnik, E. V. ^{[1
]}

Ruban, A. K. ^{[1
]}

Vereschaka, V. M. ^{[1
]}

Red'ko, V. P. ^{[1
]}

Lopato, L. M. ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Problems Mat Sci, Kiev, Ukraine

来源：

POWDER METALLURGY AND METAL CERAMICS | 2007年 / 46卷 / 1-2期

关键词：

zirconia; nanocrystalline powder; hydrothermal synthesis; metastable solid solution; ZIRCONIA PARTICLES; TRANSFORMATION; TEMPERATURE; CERAMICS; BEHAVIOR;

D O I：

10.1007/s11106-007-0004-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：

The paper exanzines the properties of the nanocrystalline powder 95 mole% ZrO2-2 mole% CeO2-3 mzole% Y2O3, synthesized using a combination of two methods: coprecipitation and hydrothermal decomposition. It is established that coprecipitation produces an x-ray amorphous gel consisting of hard aggiomerates from 5 to 10 pin and having a specific surface area of 120m(2)/g and a bottle density of temperature metastable cubic solid solution based 4 g/cm(3). Hydrothermal synthesis results in a low-on ZrO2 (F-ZrO2). Its specific surface area is 101.6 m(2)/g and bottle density is 4.65 g/cm(3). Soft agglomerates (0. 5-10 pin) consist of primary particles with sizes to 10 nm. The change in hydrothermal suspension processing steps results in soft agglomerates with branched internal porosity. This method allows synthesizing powders of needed compositions in the ZrO2-CeO2-YO3 system.

引用

页码：18 / 24

页数：7

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