Piezoelectric properties of CuO-added (Na0.5K0.5)NbO3 ceramic multilayers
作者： In-Tae Seo , In-Young Kang , You-Jeong Cha , Jae-Hong Choi , Sahn Nahm
DOI: 10.1016/J.JEURCERAMSOC.2011.11.020
关键词: Tape casting 、 Piezoelectricity 、 Sound pressure 、 Perovskite (structure) 、 Electrode 、 Composite material 、 Ceramic 、 Materials science 、 Grain size 、 Piezoelectric speaker
摘要: Abstract Multilayered ceramics (MLCs) laminated with 20 layers of CuO-added (Na0.5K0.5)NbO3 (CNKN) tape were well sintered at 960 °C an average grain size 5.0 μm. They exhibited good piezoelectric properties e 33 T / 0 = 709 , d33 = 114 pC/N, kp = 0.34 and Qm = 793. The 80Ag/20Pd electrodes formed on the CNKN MLCs when they co-fired for 2 h. A speaker fabricated using 6-layer sound pressure level (SPL) 75 dB in range between 300 20,000 Hz a maximum SPL 90 dB. This value is comparable that loud stereo radio, indicating MLC candidate material speakers.
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