• Title, Summary, Keyword: PSN-PZT ceramics

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Piezoelectric Characteristics of PZT-PSN Ceramics Depending on WO3Addition (PZT-PSN 세라믹스의 WO3의 첨가량에 따른 압전 특성)

  • 배숙희;김성곤;김철수;이경화;이상렬
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.15 no.9
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    • pp.794-797
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    • 2002
  • Piezoelectric properties of PZT-PSN ceramics were investigated as a function of WO$_3$ addition from 0 wt% to 6.0 wt%. The dielectric and piezoelectric characteristics of PZT-PSN ceramics have been investigated at different calcination (80$0^{\circ}C$~90$0^{\circ}C$) and sintering (110$0^{\circ}C$~130$0^{\circ}C$) temperatures. The grain size was increased with the addition of WO$_3$and the sintering temperatures. Anisotropic properties of electromechanical coupling coefficient and piezoelectric coefficient are proven to be dependent on processing temperatures and amount of addition. At the specimen with 0.6 wt% WO$_3$ addition, using calcination temperature of 80$0^{\circ}C$ and sintering temperature of 110$0^{\circ}C$ , mechanical quality factor(Q$_{m}$) and electromechanical coupling coefficient(k$_{p}$) showed the excellent results of 1560 and 0.48, respectively Experimental results indicated that the PZT-PSN system ceramics with WO$_3$impurity could be effectively used for the microtransformer and actuator applications, etc.etc.

Microstructures and Electrical Properties of PSN-PZT Ceramics for Piezoelectric Speaker (압전 스피커 응용을 위한 PSN-PZT계 세라믹스의 미세구조 분석 및 전기적 특성 평가)

  • Kim, Sung-Jin;Kweon, Soon-Yong
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.32 no.2
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    • pp.110-115
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    • 2019
  • $Pb(Sb_{0.5}Nb_{0.5})_x(Zr_{0.51}Ti_{0.49})_{1-x}O_3$ (abbreviation: PSN-PZT) ceramics were synthesized, using conventional bulk ceramic processing technology, with various PSN doping contents. The maximum density of PSN-PZT was 97% of the theoretical density in the samples sintered at $1,250^{\circ}C$. The maximum values of the piezoelectric properties achieved using the conventional processes were: $k_p$ of 0.625, $d_{33}$ of 531 pC/N, and $g_{33}$ of $33mV{\cdot}m/N$. Finally, we fabricated a piezo-speaker with the optimized PSN-PZT ceramics. The SPL of the speaker was measured at a distance of 1 m, with a driving voltage of $40V_{rms}$ in the frequency range of ~300 Hz to 9 kHz. The measured $SPL_{max}$ was at a very high level (95 dB), which was superior in quality in comparison with those of other commercial products.

Microstructure and Piezoelectric Characteristics of PSN-PZT Ceramics as a Function of PNW Substitution (PNW 치환에 따른 PSN-PZT 세라믹스의 미세구조 및 압전특성)

  • 류주현;우원희;오동언;류성림
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.16 no.10
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    • pp.892-896
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    • 2003
  • In this study, microstructure and piezoelectric properties of PSN-PZT ceramics modified with BiFeO$_3$ were investigated as a function of PNW substitution. With the increase of PNW substitution, tetragonality, Curie temperature and mechanical quality factor were decreased but grain size and electromechanical coupling factor(kp) was gradually increased. At 4 mol[%] PNW substitution, maximum kp of 0.567 was obtained.

Effect of MnO2 on piezoelectric properties of PSN-PZT ceramics for piezoelectric actuator applications (압전 액츄에이터용 PSN-PZT 세라믹스의 압전 특성에 미치는 MnO2 첨가 효과)

  • Choi, J.W.;Song, K.H.;Kim, H.J.;Yoon, S.J.;Yoo, K.S.
    • Journal of Sensor Science and Technology
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    • v.16 no.2
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    • pp.120-125
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    • 2007
  • The effect of $MnO_{2}$ as a sintering additive on the microstructures and the piezoelectric properties, especially mechanical quality factor, of 0.05 Pb$(Sb_{0.5}Nb_{0.5})O_{3}$-0.95 Pb$(Zr_{0.52}Ti_{0.48})O_{3}$ (PSN-PZT) piezoelectric ceramics was investigated. The samples were sintered at $1250^{\circ}C$ for 2 h. The crystal structure and surface morphology of the sample were examined using XRD and FE-SEM, respectively. A study on the influence of $MnO_{2}$ additives on the dielectric and piezoelectric properties showed that the $MnO_{2}$-added PSN-PZT system exhibited a high mechanical quality factor and well-situated piezoelectric properties. The optimized results of $d_{33}$ (319 pC/N), $k_{p}$ (55 %), and $Q_{m}$ (751.24) were obtained at 0.2 wt% $MnO_{2}$ added PSN-PZT piezoelectrics.

Piezoelectric Characteristics of Low-temperature Sintered PSN-PZT Ceramics as a Function of Zr/Ti Ratio (저온소결한 PSN-PZT 세라믹스의 Zr/Ti 비에 따른 압전특성)

  • 류주현;우원희;오동언;정영호;정광현;류성림
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.16 no.12S
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    • pp.1195-1199
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    • 2003
  • In this study, in order to develop the low temperature sintering ceramics for multilayer piezoelectric transformer, dielectric and piezoelectric properties of PSN-PZT[0.91Pb(Sb$\sub$1/2/Nb$\sub$1/2/)$\sub$0.03/(Zr$\sub$0.495/Ti$\sub$0.505/)$\sub$0.97/O$_3$-0.04Pb(Ni$\sub$1/2/W$\sub$1/2/)O$_3$+0.05BiFeO$_3$+0.3wt%MnO$_2$+0.6wt%CuO〕 ceramics were investigated according to Zr/Ti ratio. As Zr/Ti ratio is increased, electromechanical coupling factor(k$\sub$p/) and dielectric constant increased and then decreased after the ratio of Zr/Ti=50/50. Also, mechanical qualify factor(Q$\sub$m/) decreased and then increased after the ratio of Zr/Ti=50/50.

Effects of CuO on Low-temperature Sintering Characteristics of PSN-PZT System Ceramics (CuO가 PSN-PZT세라믹스의 저온소결 특성에 미치는 영향)

  • 류주현;우원희;오동언;정영호;정광현;정문영;정회승
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.16 no.12S
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    • pp.1200-1204
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    • 2003
  • In this study, in order to develop the low temperature sintering ceramics for multi-layer piezoelectric transformer, PSN-PZT system ceramics were manufactured as a function of CuO addition and their dielectric and piezoelectric characteristics were Investigated. CuO addition facilitated densification at low temperature due to the effect of Cu$_2$O-PbO liquid phase. Through the X-ray diffraction pattern study, absence of second phase unwanted was confirmed. Among the specimen to which CuO was added, the 0.6wt% CuO added specimen sintered at 900$^{\circ}C$ and 920$^{\circ}C$ showed the most excellent mechanical quality factor and electromechanical coupling factor, respectively. Besides the densification accelerator, CuO acted as a accepter and increased mechanical quality. Compared with the specimen with no addition sintered at 1150$^{\circ}C$ , the 0.6wt% CuO added specimen sintered at 920$^{\circ}C$ showed the appropriate dielectric and piezoelectric characteristics for multi-layer piezoelectric transformer.

Piezoelectric characteristics of Low temperature sintering ceramics according to Zr/Ti ratio (저온소결 PSN-PZT 세라믹스의 Zr/Ti 비에 따른 압전특성)

  • Woo, Won-Hee;Ryu, Sung-Lim;Yoo, Ju-Hyun;Oh, Dong-Un;Hong, Jae-Il;Lee, Sang-Ho
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.656-659
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    • 2003
  • In this study, in order to develop the low temperature sintering ceramics for multilayer piezoelectric transformer, dielectric and piezoelectric properties of PSN-PZT ceramics were investigated according to Zr/Ti ratio. As Zr/Ti ratio is increased, coupling factor(kp) and dielectric constant were increased and then decreased after the ratio of Zr/Ti=50/50. And also, mechanical quality factor were decreased and then increased after the ratio of Zr/Ti=50/50.

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Effect of $MnO_2$ on the PSN-PNN-PZT Ceramics ($MnO_2$가 PSN-PNN-PZT 세라믹스에 미치는 영향)

  • Nam, Seung-Hyon;Yoo, Ju-Hyun;Lee, Su-Ho;Kim, Hyun-Ki;Bah, Sen-Ki
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.236-239
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    • 2003
  • In this study, to develop the low temperature sintering ceramics for piezoelectric transformer, PSN-PNN-PZT system ceramics were manufactured as a function of $MnO_2$ addition. Its dielectric and piezoelectric characteristics were investigated. With increasing the amount of $MnO_2$ addition, electromechanical coupling factor(kp) were increased until 0.3wt% $MnO_2$ and that after decreased. mechanical quality factor(Qm) showed the maxinum value at 0.5wt% $MnO_2$. For piezoelectric transformer application, the 0.5wt% $MnO_2$ added specimen sintered at $1,000^{\circ}C$ showed the proper value of ${\varepsilon}r$= 1,646, kp=0.55 and Qm=439.

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Effect of CuO on the PSN-PNN-PZT Ceramics (CuO가 PSN-PNN-PZT 세라믹스에 미치는 영향)

  • Nam, Seung-Hyon;Yoo, Ju-Hyun;Lee, Su-Ho;Yoon, Hyon-Sang;Jeong, Yeong-Ho
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.701-704
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    • 2003
  • In this study, to develop the low temperature sintering ceramics for multilayer piezoelectric transformer, PSN-PNN-PZT system ceramics were manufactured as a function of CuO addition. Its dielectric and piezoelectric characteristics were investigated. With increasing the amount of CuO addition, grain size was increased and density increased until 0.3wt% CuO. Taking into consideration electromechanical coupling factor(kp) of 0.53, mechanical quality factor(Qm) of 423 and ${\epsilon}r$ of 1759, it can be cincluded that the CuO 0.5wt% added composition sintered at $920^{\circ}C$ is suitable for piezoelectric transformer application if Qm is improved.

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The Effect of Non-180$^{\circ}$Domain on the Piezoelectric and Dielectric Properties of the PSN-PZT Ceramics under Alternating Strong Electric Field (교류강전계가 PSN-PZT 압전체의 압전 및 유전 특성에 미치는 non-180$^{\circ}$분역 효과)

  • 윤만순;채홍인
    • Journal of the Korean Ceramic Society
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    • v.37 no.9
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    • pp.871-878
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    • 2000
  • 본 연구는 3mol% Pb(Sb$_{1}$2/Nb$_{1}$2/)O$_3$가 첨가된 상경계 영역의 Pb(Zr,Ti)O$_3$(PSN-PZT) 세라믹스에 대하여 RT66A와 광섬유센서를 이용하여, 교류강전계 하에서 압전 및 유전특성을 조사하였다. PSN-PZT 세라믹스의 압전 및 유전 특성에 미치는 non-180$^{\circ}$분역 재배열의 영향을 평가하기 위하여 RT66A와 MTI-2000 Fotonic$^{TM}$ sensor를 이용하여 인가전계와 주파수의 함수로 전계유기변위를 측정하였다. 그 결과, 교류강전계 하에서 전계유기변위는 강전계, 저주파수에서 큰 이력현상을 나타내고, 전계유기변위로부터 결정된 유효압전상수는 주파수가 감소할수록 증가하는 거동을 나타내고 있으며, 이러한 거동은 non-180$^{\circ}$분역 재배열의 영향으로 해석되었다.

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