Microstructure and piezoelectric properties of CuO-doped 0.95(K0.5Na0.5)NbO3-0.05Li(Nb0.5Sb0.5)O3 lead-free ceramics

被引：46

作者：

Zhao, Yongjie ^{[1
]}

Zhao, Yuzhen ^{[1
]}

Huang, Rongxia ^{[1
]}

Liu, Rongzheng ^{[1
]}

Zhou, Heping ^{[1
]}

机构：

[1] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2011年 / 31卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Lead-free; KNN; CuO addition; Low temperature sintering; Piezoelectric properties; ELECTRICAL-PROPERTIES; SINTERING TEMPERATURE; NIOBATE; EVOLUTION; BEHAVIOR; AID;

D O I：

10.1016/j.jeurceramsoc.2011.04.018

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 effects of sintering temperature and the addition of CuO on the microstructure and piezoelectric properties of 0.95(K0.5Na0.5)NbO3-0.05Li(Nb0.5Sb0.5)O-3 were investigated. The KNN-5LNS ceramics doped with CuO were well sintered even at 940 degrees C. A small amount of Cu2+ was incorporated into the KNN-5LNS matrix ceramics and XRD patterns suggested that the Cu2+ ion could enter the A or B site of the perovskite unit cell and replace the Nb5+ or Li+ simultaneously. The study also showed that the introduction of CuO effectively reduced the sintering temperature and improved the electrical properties of KNN-5LNS. The high piezoelectric properties of d(33) = 263 pC/N, k(p) = 0.42, Q(m)= 143 and tan delta=0.024 were obtained from the 0.4 mol% CuO doped KNN-5LNS cerlunies sintered at 980 degrees C for 2h. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1939 / 1944

页数：6

共 25 条

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