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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

PNN/PZT系梯度功能压电材料的离子互扩散

朱信华; 徐捷+; 孟中岩+   

  1. 南京大学固体微结构物理国家重点实验室; 南京 210093; 上海大学材料科学与工程学院; 上海 201800
  • 收稿日期:1997-04-07 修回日期:1997-05-26 出版日期:1998-04-20 网络出版日期:1998-04-20

Ionic Interdiffosion of Functionally Gradient Piezoelectric Materials in PNN/PZT System

ZHU Xin-Hua; XU Jie+; Meng Zhong-Yan+   

  1. National Laborntory o Solid State MicrostructuTes; Nanjing University Nanjing 210092 China; +School of Materials Science and Engineering; Shanghai University Shanghai 201800 China
  • Received:1997-04-07 Revised:1997-05-26 Published:1998-04-20 Online:1998-04-20

PDF (PC)

830

被引次数

3

摘要： 本文研究了PNN／PZT系梯度功能压电材料中，不同离子（Nb5+、Ni2+、Zr4+、Ti4+）的互扩散反应随扩散温度和扩散时间的变化规律．利用电子探计（EPMA）测量了离子的组份分布，确定了离子互扩散层的厚度．采用“薄板扩散叠加”模型，对Ni2+、Nb5+、Ti4+和Zr4+离子的组份分布进行了计算机数值模拟，结果与EPMA实验相吻合．估算了离子的扩散系数与表观激活能，并对此进行了讨论．

关键词: 离子互扩散, 组分分布, PNN／PZT系压电材料, 梯度功能材料

Abstract: The ionic interdiffusions for Nb5+, Ni2+, Zr4+ and Ti4+ ions in the PNN/PZT functionally gradient piezoelectric materials were investigated
as a function of diffusion temperature and time respectively. The ionic compositional distribution profiles were examined by electron probe microbeam analysis (EPMA),
from which the thickness of the interdiffusion layers were determined. Based on a diffusion model of the overlapped diffusion solute from thin slub, the numerical
simulation of the ionic concentration distributions for Nb5+, Ni2+, Zr4+ and Ti4+ ions was carried out by computer, which was in agreement
with the EPMA experimental result. The ionic diffusivities and apparent activation energies were estimated, and discussed.

Key words: ionic interdiffusion, compositional distribution, piezoelectric materials, PNN/PZT system, functionally gradient materials

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