CONVENTIONALLY PREPARED SUBMICROMETER LEAD-BASED PEROVSKITE POWDERS BY REACTIVE CALCINATION

被引：102

作者：

SHROUT, TR ^{[1
]}

PAPET, P ^{[1
]}

KIM, S ^{[1
]}

LEE, GS ^{[1
]}

机构：

[1] PENN STATE UNIV,MAT RES LAB,UNIVERSITY PK,PA 16802

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1990年 / 73卷 / 07期

关键词：

calcination; lead; models; perovskites; powders;

D O I：

10.1111/j.1151-2916.1990.tb05236.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：

Submicrometer powders of various Pb‐based perovskites, including PbTiO3, PbZrO3, Pb(Zr0.53Ti0.47)O3, and Pb(Mg1/3Nb2/3)O3 were prepared by a reactive calcination process. Using only reagent‐grade raw materials and conventional processing techniques, highly reactive powders were produced by reacting the materials near the temperature of maximum volumetric expansion. At this point, the morphological development results in a skeletal‐type structure consisting of ultrafine particulates that can be readily broken down further by milling. Powder sizes less than 0.3 μm and as small as 70 nm generally only achievable using chemical processing techniques were achieved. The highly reactive powders allowed densification to occur at temperatures as low as ∼900°C with correspondingly small grain sizes. A model describing the physiochemical behavior and associated morphological development of Pb‐based perovskites was herein proposed. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：1862 / 1867

页数：6

共 27 条

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