Temperature dependence of unipolar fatigue behavior of lead-free alkali niobate ceramics

被引：9
|
作者：
Martin, Alexander [1 ]
Kakimoto, Ken-ichi [1 ]
Hatano, Keiichi [2 ]
Doshida, Yutaka [2 ]
机构：
[1] Nagoya Inst Technol, Frontier Res Inst Mat Sci, Showa Ku, Gokiso Cho, Nagoya, Aichi 4668555, Japan
[2] TAIYO YUDEN CO LTD, R&D Lab, Mat R&D Dept, Takasaki, Gunma 3703347, Japan
来源：
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2016年 / 124卷 / 06期
关键词：
Actuators; Fatigue; Piezoelectric properties; Lead-free; Phase transformation; ZIRCONATE-TITANATE CERAMICS; PIEZOELECTRIC PROPERTIES; FREE PIEZOCERAMICS; ELECTRIC FATIGUE; FERROELECTRIC CERAMICS; STABILITY; ACTUATORS; SELECTION; PLZT;
D O I：
10.2109/jcersj2.15279
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 unipolar fatigue behavior of undoped Li0.06Na0.52K0.42NbO3 (LNKN6-a) and the same compound with additives (LNKN6-b) were observed. Unipolar cycling was performed between room temperature and 150 degrees C under a high unipolar electric field of 4kV/mm. LNKN6-a fatigued under crack formation throughout the examined temperature range. The switchable polarization 2P(r) of LNKN6-a decreased for 20% (=2 mu C/cm(2)) at 150 degrees C. In contrast, mechanical degradation was not observed in LNKN6-b. The switchable polarization 2P(r) of LNKN6-b decreased for 15% (=3.2 mu C/cm(2)) at 150 degrees C. It should be noted that at 50 degrees C, fatigue-free behavior was observed for LNKN6-b over at least 106 cycles. The influence of phase transition on this fatigue-free behavior was discussed. (C)2016 The Ceramic Society of Japan. All rights reserved.
引用
收藏
页码：730 / 736
页数：7
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