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CAS OpenIR  > 中科院上海应用物理研究所2011-2017年  > 期刊论文
题名:
High Q(m) values and humidity effect on the electrical properties of (K, Na)NbO3 lead-free piezoceramics doped with B2O3-CuO mixed oxides
作者: Zhen, YH; Li, LL; Lin, YN; Wang, K; Zhu, FY; Jia, KL
刊名: JOURNAL OF THE AMERICAN CERAMIC SOCIETY
出版日期: 2017
卷号: 100, 期号:4, 页码:1561-1569
关键词: (K ; Na)NbO3 (KNN) ; humidity effect ; lead-free piezoceramics ; mechanical quality factor Q(m)
DOI: 10.1111/jace.14586
文章类型: 期刊论文
英文摘要: To greatly enhance the mechanical quality factor (Q(m)) 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 Q(m) value of the piezoceramic. An optimal Q(m) value as high as 2128 was obtained, which is 35 times higher than that of pure KNN ceramic. Interestingly, we found that the Q(m) value was sensitive to humidity of the surrounding environment. As the relative humidity (RH) increased from 25% RH to 78% RH, the Q(m) value of the BC-KNN ceramics decreased from 2128 to 267. We found that the dependence of the Q(m) value 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 Q(m) performance in a humid environment.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000399610800040
ISSN号: 0002-7820
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/27343
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Zhen, YH,Li, LL,Lin, YN,et al. High Q(m) values and humidity effect on the electrical properties of (K, Na)NbO3 lead-free piezoceramics doped with B2O3-CuO mixed oxides[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2017-01-01,100(4):1561-1569.
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文件名: High Q(m) values and humidity effect on the electrical properties of (K, Na)NbO3 lead-free piezoceramics doped with B2O3-CuO mixed oxides.pdf
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