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The phase structure and electric properties of low-temperature sintered (K, Na)NbO3-based piezoceramics modified by CuO
Zhou, Jia-Jun1; Cheng, Li-Qian2; Wang, Ke2; Zhang, Xiao-Wen2; Li, Jing-Feng2; Liu, Hong1; Fang, Jing-Zhong1; Wang, K. (wang-ke@tsinghua.edu.cn)
Source PublicationCeramics International
Volume40Issue:2Pages:2927-2931
2014
Language英语
ISSN02728842
DOI10.1016/j.ceramint.2013.10.019
Indexed BySCI ; Ei
WOS IDWOS:000329882100050
Subtype期刊论文
Abstract0.25 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.; 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.
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Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/6936
Collection轻量化中心
Corresponding AuthorWang, K. (wang-ke@tsinghua.edu.cn)
Affiliation1. 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
GB/T 7714
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.
APA Zhou, Jia-Jun.,Cheng, Li-Qian.,Wang, Ke.,Zhang, Xiao-Wen.,Li, Jing-Feng.,...&Wang, K. .(2014).The phase structure and electric properties of low-temperature sintered (K, Na)NbO3-based piezoceramics modified by CuO.Ceramics International,40(2),2927-2931.
MLA Zhou, Jia-Jun,et al."The phase structure and electric properties of low-temperature sintered (K, Na)NbO3-based piezoceramics modified by CuO".Ceramics International 40.2(2014):2927-2931.
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