CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Intergranular Stress Induced Phase Transition in CaZrO3 Modified KNN-Based Lead-Free Piezoelectrics
Chen, F; Li, YH; Gao, GY; Yao, FZ; Wang, K; Li, JF; Li, XL; Gao, XY; Wu, WB
2015
Source PublicationJOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume98Issue:4Pages:1372—1376
Subtype期刊文献
AbstractThe phase transition temperatures of CaZrO3-doped (Na0.49K0.49Li0.02)(Nb0.8Ta0.2)O-3 lead-free piezoelectrics (LKNNT-CZ5) have been studied with X-ray diffraction and Raman scattering. It is found that LKNNT-CZ5 ceramics and powders with the same crystallite size (similar to 2-5m) exhibit distinctly different phase transition behaviors versus temperature. The ceramic bulk changes its orthorhombic phase to tetragonal structure abruptly after being pulverized to powders at room temperature(RT), and follows a phase transition sequence with increasing temperature: orthorhombic (RT-65 degrees C), orthorhombic and tetragonal (65 degrees C-105 degrees C), and tetragonal phase (105 degrees C to similar to 220 degrees C). Contrastively, the powders hold a tetragonal structure without any phase transition within the whole temperature region (RT-220 degrees C). These differences might be induced by the existing internal stress or residual strain, which could be released during the grinding process.
Keyword(Na0.5k0.5)Nbo3-linbo3 Ceramics Free Piezoceramics Internal Stresses Raman-scattering
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24483
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Chen, F,Li, YH,Gao, GY,et al. Intergranular Stress Induced Phase Transition in CaZrO3 Modified KNN-Based Lead-Free Piezoelectrics[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2015,98(4):1372—1376.
APA Chen, F.,Li, YH.,Gao, GY.,Yao, FZ.,Wang, K.,...&Wu, WB.(2015).Intergranular Stress Induced Phase Transition in CaZrO3 Modified KNN-Based Lead-Free Piezoelectrics.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,98(4),1372—1376.
MLA Chen, F,et al."Intergranular Stress Induced Phase Transition in CaZrO3 Modified KNN-Based Lead-Free Piezoelectrics".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 98.4(2015):1372—1376.
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