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High Qmvalues and humidity effect on the electrical properties of (K, Na)NbO3lead-free piezoceramics doped with B2O3–CuO mixed oxides
Zhen, Yuhua1; Li, Linling1; Lin, Yaning1; Wang, Ke2; Zhu, Fangyuan3; Jia, Kaili1
2017
Source PublicationJournal of the American Ceramic Society
ISSN00027820
Volume100Issue:4Pages:1561-1569
AbstractTo greatly enhance the mechanical quality factor (Qm) of piezoceramic materials, B2O3–CuO mixed oxides were added to a K0.48Na0.52NbO3-based lead-free piezoceramic (abbreviated as BC-KNN). The results suggest that the B2O3–CuO additives effectively improved the sinterability and Qmvalue of the piezoceramic. An optimal Qmvalue as high as 2128 was obtained, which is 35 times higher than that of pure KNN ceramic. Interestingly, we found that the Qmvalue was sensitive to humidity of the surrounding environment. As the relative humidity (RH) increased from 25% RH to 78% RH, the Qmvalue of the BC-KNN ceramics decreased from 2128 to 267. We found that the dependence of the Qmvalue on humidity was closely related to the instability of the relative dielectric constant (r). Our results show that a dense microstructure is critical for maintaining a stable high Qmperformance in a humid environment. © 2017 The American Ceramic Society
DOI10.1111/jace.14586
EI Accession Number20171003415444
EI KeywordsNiobium compounds
EI Classification Number804.2 Inorganic Compounds - 812.1 Ceramics
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25506
Collection中国科学院上海硅酸盐研究所
Affiliation1.College of Science, China University of Petroleum, Qingdao; Shandong, China;
2.State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China;
3.Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Science, Shanghai, China
Recommended Citation
GB/T 7714
Zhen, Yuhua,Li, Linling,Lin, Yaning,等. High Qmvalues and humidity effect on the electrical properties of (K, Na)NbO3lead-free piezoceramics doped with B2O3–CuO mixed oxides[J]. Journal of the American Ceramic Society,2017,100(4):1561-1569.
APA Zhen, Yuhua,Li, Linling,Lin, Yaning,Wang, Ke,Zhu, Fangyuan,&Jia, Kaili.(2017).High Qmvalues and humidity effect on the electrical properties of (K, Na)NbO3lead-free piezoceramics doped with B2O3–CuO mixed oxides.Journal of the American Ceramic Society,100(4),1561-1569.
MLA Zhen, Yuhua,et al."High Qmvalues and humidity effect on the electrical properties of (K, Na)NbO3lead-free piezoceramics doped with B2O3–CuO mixed oxides".Journal of the American Ceramic Society 100.4(2017):1561-1569.
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