Microstructure and electrical properties of Ti-modified (Na0.5K0.5)(Ti x Nb1-x )O3 lead-free piezoelectric ceramics

被引：1
|
作者：
Zhang Qian [1 ]
Zhang Boping [1 ]
Zhao Pei [1 ]
Li Haitao [1 ]
Zhang Limin [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
来源：
RARE METALS | 2009年 / 28卷 / 02期
基金：
中国国家自然科学基金;
关键词：
lead-free piezoelectric ceramics; Ti-doped; piezoelectric property; dielectric property; normal sintering; oxygen vacancies;
D O I：
10.1007/s12598-009-0028-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ti-Modified (Na0.5K0.5)(Ti (x) Nb1-x )O-3 (NKNT) piezoelectric ceramics were fabricated by double-layer buried powder process at 1020A degrees C for 2 h. The microstructures, and piezoelectric and dielectric properties of the lead-free NKNT ceramics were investigated. X-ray diffraction results indicated that Ti4+ had diffused into the (Na0.5K0.5)NbO3 lattices to form a solid solution with a perovskite structure. The introducing of Ti into the (Na0.5K0.5)NbO3 solid solution effectively reduced the sintering temperature and densified the microstructure with a decreased grain size. The highest relative density reached more than 90%. The highest piezoelectric dielectric coefficient d (33) and planar mode electromechanical coupling coefficient k (p) were 110 pC/N and 19.5%, which were obtained in the NKNT ceramic with 1 mol% Ti. The piezoelectric properties of the NKNT ceramics were enhanced by aging in air for a period of time owing to the compensation of oxygen vacancies.
引用
收藏
页码：142 / 146
页数：5
相关论文
共 50 条
  • [31] Microstructure and electrical properties of La-modified K0.5Na0.5NbO3 lead-free piezoelectric ceramics
    Gao, Daojiang
    Kwok, K. W.
    Lin, Dunmin
    Chan, H. L. W.
    JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2009, 42 (03)
  • [32] Piezoelectric Energy Harvesting Using Lead-free (Na0.5K0.5)0.97(Nb0.96Sb0.04)O3 Ceramics
    Kang, Jinhee
    Noh, Jungrae
    Oh, Youngkwang
    Hwang, Larkhoon
    Yoo, Juhyun
    2010 IEEE INTERNATIONAL SYMPOSIUM ON THE APPLICATIONS OF FERROELECTRICS (ISAF), 2010,
  • [33] Microstructure and Electrical Properties of K0.5Na0.5NbO3-LiSbO3-BiFeO3-x %molZnO Lead-Free Piezoelectric Ceramics
    Zhao, Xiayan
    Wang, Hua
    Xu, Jiwen
    Yuan, Changlai
    Zhai, Xia
    Cui, Yerang
    JOURNAL OF ELECTRONIC MATERIALS, 2014, 43 (02) : 506 - 511
  • [34] Microstructure and Electrical Properties of K0.5Na0.5NbO3-LiSbO3-BiFeO3-x %molZnO Lead-Free Piezoelectric Ceramics
    Xiayan Zhao
    Hua Wang
    Jiwen Xu
    Changlai Yuan
    Xia Zhai
    Yerang Cui
    Journal of Electronic Materials, 2014, 43 : 506 - 511
  • [35] Electrical properties of lead-free 0.98(Na0.5K0.5)NbO3-0.02Ba(Zr0.52Ti0.48)O3 piezoelectric ceramics by optimizing sintering temperature
    Seung-Hwan Lee
    Sung-Gap Lee
    Young-Hie Lee
    Nanoscale Research Letters, 7
  • [36] Electrical properties of lead-free 0.98(Na0.5K0.5)NbO3-0.02Ba(Zr0.52Ti0.48)O3 piezoelectric ceramics by optimizing sintering temperature
    Lee, Seung-Hwan
    Lee, Sung-Gap
    Lee, Young-Hie
    NANOSCALE RESEARCH LETTERS, 2012, 7
  • [37] Production and dielectric properties of lead-free ceramics with the formula [(Na0.5K0.5)1 − xLix](Nb1 − y − zTaySbz)O3
    I. A. Verbenko
    O. N. Razumovskaya
    L. A. Shilkina
    L. A. Reznichenko
    K. P. Andryushin
    Inorganic Materials, 2009, 45 : 702 - 708
  • [38] (Na0.5K0.5)NbO3-LiTaO3 lead-free piezoelectric ceramics
    Guo, YP
    Kakimoto, K
    Ohsato, H
    MATERIALS LETTERS, 2005, 59 (2-3) : 241 - 244
  • [39] Dielectric and Piezoelectric Properties of (Na,Ba)(Nb,Ti)O3 Lead-Free Piezoelectric Ceramics
    Aoyagi, Rintaro
    Iwata, Makoto
    Maeda, Masaki
    ELECTROCERAMICS IN JAPAN XIII, 2010, 445 : 55 - 58
  • [40] Physical and electric properties of lead-free (Na0.5K0.5)NbO3-Ba(Zr0.04Ti0.96)O3 ceramics
    Wang, Chun-Huy
    JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 2009, 117 (1365) : 680 - 684
12345