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High Q(m) values and humidity effect on the electrical properties of (K, Na)NbO3 lead-free piezoceramics doped with B2O3-CuO mixed oxides
Zhen, YH; Li, LL; Lin, YN; Wang, K; Zhu, FY; Jia, KL
2017
Source PublicationJOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN0002-7820
Volume100Issue:4Pages:1561-1569
Subtype期刊论文
AbstractTo 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.
Keyword(k Na)Nbo3 (Knn) Humidity Effect Lead-free Piezoceramics Mechanical Quality Factor q(m)
DOI10.1111/jace.14586
Indexed BySCI
Language英语
WOS IDWOS:000399610800040
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/27343
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
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,2017,100(4):1561-1569.
APA Zhen, YH,Li, LL,Lin, YN,Wang, K,Zhu, FY,&Jia, KL.(2017).High Q(m) values and humidity effect on the electrical properties of (K, Na)NbO3 lead-free piezoceramics doped with B2O3-CuO mixed oxides.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,100(4),1561-1569.
MLA Zhen, YH,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".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 100.4(2017):1561-1569.
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