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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: 2014-03-01
卷号: 40, 期号:2, 页码:2927-2931
关键词: Piezoelectric properties ; Perovskites ; Niobates ; Lead-free
文章类型: Article
英文摘要: 0.25 wt% CuO-doped (Li,K,Na)(Nb,Ta)O-3-AgSbO3 lead-free piezoceramics with pure perovskite structure were successfully prepared at a sintering temperature below 1000 degrees C. The sintering temperature of KNN-based piezoceramics was effectively reduced by about 100 degrees 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 (T-c), compared to undoped ones. The KNN-based piezoceramics became "hard" as CuO was added, supported by an increase of Q(m). Fairly good electrical properties of d(33)*=383 pm/V, epsilon(r)=860, Q(m)=188 and T-c=215 degrees C could be obtained in dense CuO-modified KNN-based piezoceramics sintered at 970 degrees C, demonstrating promising potential in practical applications. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
WOS标题词: Science & Technology ; Technology
类目[WOS]: Materials Science, Ceramics
研究领域[WOS]: Materials Science
关键词[WOS]: LEAD-FREE PIEZOCERAMICS ; FREE PIEZOELECTRIC CERAMICS ; ALKALI NIOBATES ; PERSPECTIVE ; BEHAVIOR ; SCIENCE
收录类别: SCI
语种: 英语
WOS记录号: WOS:000329882100050
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/2504
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
2.Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R 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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