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题名:
The phase structure and electric properties of low-temperature sintered (K, Na)NbO3-based piezoceramics modified by CuO
作者: Zhou, Jia-Jun1; Cheng, Li-Qian2; Wang, Ke2; Zhang, Xiao-Wen2; Li, Jing-Feng2; Liu, Hong1; Fang, Jing-Zhong1
刊名: Ceramics International
出版日期: 2014
卷号: 40, 期号:2, 页码:2927-2931
学科分类: Niobium oxide - Perovskite - Piezoelectric ceramics - Sintering - Sodium
DOI: 10.1016/j.ceramint.2013.10.019
通讯作者: Wang, K. (wang-ke@tsinghua.edu.cn)
文章类型: 期刊论文
中文摘要: 0.25 wt% CuO-doped (Li,K,Na)(Nb,Ta)O3-AgSbO3 lead-free piezoceramics with pure perovskite structure were successfully prepared at a sintering temperature below 1000 C. The sintering temperature of KNN-based piezoceramics was effectively reduced by about 100 C due to the enhanced densification process induced by the addition of CuO. Besides, the acceptable sintering temperature window was broadened by the addition of CuO. It is found that the CuO-doped samples show slightly higher tetragonal- orthorhombic phase transition point (TT-O) but a lower Curie point (Tc), compared to undoped ones. The KNN-based piezoceramics became "hard" as CuO was added, supported by an increase of Qm. Fairly good electrical properties of d33*=383 pm/V, Εr=860, Qm=188 and Tc=215 C could be obtained in dense CuO-modified KNN-based piezoceramics sintered at 970 C, demonstrating promising potential in practical applications. © 2013 Elsevier Ltd and Techna Group S.r.l.
英文摘要: 0.25 wt% CuO-doped (Li,K,Na)(Nb,Ta)O3-AgSbO3 lead-free piezoceramics with pure perovskite structure were successfully prepared at a sintering temperature below 1000 C. The sintering temperature of KNN-based piezoceramics was effectively reduced by about 100 C due to the enhanced densification process induced by the addition of CuO. Besides, the acceptable sintering temperature window was broadened by the addition of CuO. It is found that the CuO-doped samples show slightly higher tetragonal- orthorhombic phase transition point (TT-O) but a lower Curie point (Tc), compared to undoped ones. The KNN-based piezoceramics became "hard" as CuO was added, supported by an increase of Qm. Fairly good electrical properties of d33*=383 pm/V, Εr=860, Qm=188 and Tc=215 C could be obtained in dense CuO-modified KNN-based piezoceramics sintered at 970 C, demonstrating promising potential in practical applications. © 2013 Elsevier Ltd and Techna Group S.r.l.
收录类别: SCI ; Ei
项目资助者: National Nature Science Foundation of China [51221291, 51211140345] ; Ministry of Science and Technology of China [2009CB623304] ; State Key Laboratory of New Ceramics and Fine Processing Tsinghua University [KF201309]
语种: 英语
WOS记录号: WOS:000329882100050
ISSN号: 02728842
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/6936
Appears in Collections:轻量化中心_期刊论文

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作者单位: 1. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
2. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

Recommended Citation:
Zhou, Jia-Jun,Cheng, Li-Qian,Wang, Ke,et al. The phase structure and electric properties of low-temperature sintered (K, Na)NbO3-based piezoceramics modified by CuO[J]. Ceramics International,2014,40(2):2927-2931.
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