文章信息/Info

Title:

Progress in Lead-free Piezoelectric ceramics

作者:

劉文鳳*; 周超; 高景輝; 薛德幀; 張力學; 李盛濤; 任曉兵

西安交通大學電力設備電氣絕緣國家重點實驗室 前沿科學技術研究院 金屬強度國家重點試驗室

Author(s):

Liu Wenfeng*;   Zhou Chao;  Gao Jinghui;  Xue Dezhen; Zhang Lixue;  Li Shengtaoand Ren Xiaobing

State Key Laboratory of Electrical Insulation and Power Equipment, Frontier Institute of Science and Technology, State Key Laboratory of Mechanical Behavior of Materials

關鍵詞:

無鉛壓電陶瓷; 鈮酸鈉鉀; 鈦酸鋇; 鋯鈦酸鋇鈣; 準同型相界

DOI:

10.7502/j.issn.1674-3962.2016.06.04

文獻標志碼:

A

摘要:

壓電陶瓷已被廣泛應用于航空航天、艦艇聲納、高速列車、汽車、精密儀器控制、移動通訊、辦公及家用電子產品等領域，在全球已經形成了每年近百億美元的巨大市場。然而，目前壓電產業主的主力為對人體及環境有害的鋯鈦酸鉛(PZT)陶瓷。隨著國際上對電子產品中使用含鉛等有害材料的限制愈來愈嚴格，擁有巨大市場的壓電陶瓷的無鉛化已成為擺在全球面前的緊迫任務。準同相界（MPB）是獲得高壓電性能的關鍵所在，現已開展了大量的研究工作，旨在揭示MPB的物理本質并基于MPB原理獲得具有大壓電效應及電致應變的環境友好型壓電陶瓷。本文綜述了三類性能最優的無鉛材料體系：鈦酸鋇基（BT）、鈮酸鉀鈉基（KNN）和鈦酸鉍鈉基（BNT）陶瓷, 近年來在壓電理論及實驗結果方面的代表性研究進展。

Abstract:

Piezoelectric ceramics is a functional material which can convert mechanical energy into electrical energy and vise-visa. It can find wide applications ranging from our daily life to high-end techniques and dominates a billion-dollar market. For half a century, the working horse of the field is the polycrystalline PbZr1-xTixO3 (PZT), which is now globally resisted for containing the toxic element lead. Thus, the research of lead-free piezoelectric ceramic with high performance has been a hot topic all over the world. It is believed that the morphotropic phase boundary (MPB) in phase diagram is the key to achieve high piezoelectric performance; great efforts have been made to build the MPB in lead-free system and reveal the physical nature of MPB. In the present paper, we review the recent progress, both experimental and theoretical, in the most promising lead-free ceramic systems, i.e. BaTiO3, (KNa)NbO3 and (BiNa)TiO3 systems.