Effects of the addition of Li0.8Ni0.2Nb0.96O3 on the structure and electrical properties of K0.48Na0.52NbO3 lead-free piezoceramics

被引：9

作者：

Feng, Wei ^{[1
,2
]}

Huang, Yanqiu ^{[1
,2
]}

Yang, Cheng ^{[1
,2
]}

Lu, Jian ^{[1
,2
]}

Huang, Ya ^{[1
,2
]}

Hu, Qingbin ^{[1
,2
]}

Qin, Haina ^{[1
,2
]}

机构：

[1] China Univ Geosci, Engn Res Ctr Nanogeomat, Minist Educ, Wuhan 430074, Peoples R China

[2] China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2014年 / 189卷

关键词：

Lead-free piezoelectric ceramics; Microstructure; Electrical properties; PIEZOELECTRIC PROPERTIES; PHASE-STRUCTURE; MICROSTRUCTURE; CERAMICS; TEMPERATURE; BEHAVIOR;

D O I：

10.1016/j.mseb.2014.07.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lead-free K0.48Na0.52NbO3 (KNN) ceramics doped with Li0.8Ni0.2Nb0.96O3 (LNN) were prepared by the mixed oxide method. The structure, microstructure, and electrical properties of the ceramics were investigated systematically. All the samples exhibited the main orthorhombic perovskite phase structure, and the secondary phase K5.75Nb10.85O30 was detected when x >= 0.010. Our work revealed that the Ni2+ ions entered into the B-site and lead to the formation of small amounts of the secondary phase. Moreover, the addition of LNN increased the density of the KNN ceramics. With increasing addition of LNN, the T-C increased while the TO-T decreased, respectively. The ceramic doped with 2 mol% LNN exhibited optimum electrical properties with P-r of 23.92 mu C/cm(2), d(33) of 110 +/- 3 pC/N, k(p) of 27.15% and k(t) of 27.75%. The Q(m) increased significantly with increasing LNN content, and the maximum value of 195 is obtained at x=0.035. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：7 / 12

页数：6

共 33 条

[1]

[Anonymous], 1964, CHEM IMPERFECT CRYST

[2]

[Anonymous], J APPL PHYS

[3] Effect of MnO on the phase development, microstructures, and dielectric properties of 0.95Na0.5K0.5NbO3-0.05LiTaO3 ceramics [J].