醇-水溶液加热法制备纳米氧化锆粉体

无机材料学报

醇-水溶液加热法制备纳米氧化锆粉体

李蔚; 高濂; 郭景坤

中国科学院上海硅酸盐所高性能陶瓷和超微结构国家重点实验室;上海 200050

收稿日期:1998-01-08 修回日期:1998-02-23 出版日期:1999-02-20 网络出版日期:1999-02-20

Synthesis of Yttria-Stabilized Zirconia Nanoparticles by Heating of Alcohol-Aqueous Salt Solutions

LI Wei; GAO Lian; GUO Jing-Kun

State Key Lab of High Performance & Superfine Mircostructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China

Received:1998-01-08 Revised:1998-02-23 Published:1999-02-20 Online:1999-02-20

摘要/Abstract

摘要： 本研究采用了一种新颖的粉体制备方法-醇-水溶液加热法来制备纳米ZrO₂（Y₂O₃）粉体．实验结果表明：通过选择适当的条件，该方法可制得粒径小、团聚少的纳米ZrO₂（Y₂O₃）粉体．与通常的共沉淀法相比。该方法制得的粉体因形成一种“包裹”结构，使得单斜相含量随煅烧温度的升高而减少，从而更有利于烧结．

关键词: 醇-水溶液加热法, ZrO₂（Y₂O₃）粉体

Abstract: A novel method which involved the heating of a ZrOCl₂ and Y(NO₃)₃ solution with an alcohol-water mixture as a solvent was used to synthesize the
nanoparticles of ZrO₂(3Y). By choosing the composition of the solvent mixture and adding appropriate dispersant, weakly agglomerated powders of ZrO₂(3Y)
with the average particle size of 11～15nm can be obtained. Contrast with the ordinary trend of the powder synthesized by coprecipitation, the monoclinic
phase in this powder decreases when the calcination temperature rising from 600℃ to 900℃, the mechanism of this phenomenon was investigated.
High-density and fine-particle Y-TZP ceramics were obtained by pressureless sintering.

Key words: heating of alcohol-aqueous salt solutions, ZrO₂(3Y), nanoparticles

中图分类号:

TF123

李蔚,高濂,郭景坤. 醇-水溶液加热法制备纳米氧化锆粉体[J]. 无机材料学报.

LI Wei,GAO Lian,GUO Jing-Kun. Synthesis of Yttria-Stabilized Zirconia Nanoparticles by Heating of Alcohol-Aqueous Salt Solutions[J]. Journal of Inorganic Materials.