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热压烧结对锆钛酸铅镧陶瓷电卡效应的影响
作者:王顺达 朱定洋 曾亦可 
单位:华中科技大学光学与电子信息学院 武汉 430074 
关键词:铁电陶瓷 锆钛酸铅镧 电卡效应 
分类号:TM282
出版年,卷(期):页码:2015,43(6):0-0
DOI:10.14062/j.issn.0454-5648.2015.06.04
摘要:

 探讨热压烧结工艺对PLZT(锆钛酸铅镧)陶瓷材料介电击穿性能、饱和极化强度以及电卡性能的影响。通过X射线衍射和扫描电子显微镜,分析陶瓷样品的相组成和微观结构。结果表明,热压烧结法有助于控制陶瓷晶粒的生长,提高陶瓷的致密度并增大陶瓷的介电击穿场强,从而有效提高陶瓷的电卡性能以及电卡转换效率。在328 K (55 )478 K (205 )附近,分别发生低温铁电三方相到高温铁电三方相的相变(FRLFRH)以及高温铁电三方相到立方顺电相(FRHPc)的相变,展现了比较好的弛豫性,在室温下达到3.6 K的绝热温变与1.8×0−7 (K·m)/V的电卡转换效率,具有良好的电卡性能。

 The influence of hot-press sintering on the dielectric breakdown strength, polarization and electrocaloric effects of lead lanthanum zirconate titanate ceramics was investigated. The microstructure and phases of materials were characterized by scanning electron microscopy and X-ray diffraction. Compared to the conventional solid-state sintering method, hot-press sintering process can control the grain growth, and enhance the bulk density of the samples and the dielectric breakdown strength, thus effectively improving the electrocaloric effect and electrocaloric coefficients. At 328 K and 478 K, the phase transfers from low-temperature ferroelectric rhombohedral to high-temperature ferroelectric rhombohedral and from high-temperature ferroelectric rhombohedral to paraelectric phase, respectively, showing the superior dielectric relaxation properties. At room temperature, the samples fabricated by hot-press sintering method exhibit a good electrocaloric performance, i.e., a large adiabatic temperature drop of 3.6 K and a great electrocaloric coefficient (|ΔTE|=1.8×10−7 (K·m)/V).

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基金项目:
国家自然科学基金(61378076)资助项目。
作者简介:
第一作者:王顺达(1991—),男,硕士研究生。 通信作者:曾亦可(1955—),男,博士,教授。
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参考文献:

 [1]    黄先进, 郝瑞祥, 张立伟,. 液气循环压缩空气储能系统建模与压缩效率优化控制[J]. 中国电机工程学报, 2014, 34(13): 20472054.

HUANG Xianjin, HAO Ruixiang, ZHANG Liwei, et al. Proc CSEE(in Chinese), 2014, 34(13): 20472054.

[2]    TEGUS O, BRÜCK E, BUSCHOW K H J, et al. Transition-metal-based magnetic refrigerants for room-temperature applications [J]. Nature, 2002, 415(6868): 150152.

[3]    PAKHOMOV O V, KARAMENKO S F, SEMENOV A A, et al. Thermodynamic estimation of cooling efficiency using an
electrocaloric solid state line [J]. Tech Phys, 2010, 55(8): 1155
1160.

[4]    KOBEKO P, KURTSCHATOV J. Dielectric properties of Rochelle salt crystal [J]. Z Physik, 1930, 66: 192-205.

[5]    MISCHENKO A S, ZHANG,Q SCOTT J F, et al. Giant electrocaloric effect in thin-film PbZr0.95Ti0.05O3 [J]. Science, 2006, 311: 12701271.

[6]    NEESE Bret, CHU Baojin, LU Shengguo, et al. Large electrocaloric effect in ferroelectric polymers near room temperature [J]. Science, 2008, 321: 821823.

[7]    QIAN Xiaoshi, LU Shengguo, LI Xinyu, et al. Large electrocaloric effect in a dielectric liquid possessing a large dielectric anisotropy near the isotropic-nematic transition [J]. Adv Funct Mater, 2013, 23: 28942898.

[8]    QIAN Xiaoshi, YE Huijian, ZHANG Yingtang, et al. Giant electrocaloric response over a broad temperature range in modified BaTiO3 ceramics [J]. Adv Funct Mater, 2013, 10: 10021027.

[9]    CORREIA T M, YOUNG J S, WHATMORE R W, Investigation of the electrocaloric effect in a PbMg2/3Nb1/3O3-PbTiO3 relaxor thin film [J]. Appl Phys Lett, 2009, 95: 182904.

[10]  KAR-NARAYAN S, MATHUR N D. Direct and indirect electrocaloric measurements using multilayer capacitors [J]. J Phys D Appl Phys, 2010, 43(3): 32002.

[11]  ZHANG Guangzu, LIU Sisi, YU Yan, et al. Microstructure and electrical properties of (Pb0.87Ba0.1La0.02)(Zr0.68Sn0.24Ti0.08)O3 anti-ferroelectric ceramics fabricated by the hot-press sintering method [J]. J Eur Ceram Soc, 2013, 33(1): 113121.

[12]  杨建, 顾巍, 潘丽梅, . 热压烧结制备原位复合(TiB2+TiC)/Ti3SiC2复相陶瓷[J]. 硅酸盐学报, 2011, 39(2): 223227.
YANG Jian, GU Wei, PAN Limei, et al. J Chin Ceram Soc, 2011, 39(2): 223227.

[13]  李兴旺, 张月娟, 莫小刚, . 埋粉热压后处理制备Nd:YAG激光陶瓷[J]. 硅酸盐学报, 2014, 42(6): 734739.
LI Xinwang, ZHANG Yuejuan, MO Xiaogang, et al. J Chin Ceram Soc, 2014, 42(6): 734
739.

[14]  鲁圣国, 唐新桂, 伍尚华, . 铁电材料中的大电卡效应[J]. 无机材料学报, 2014, 29(1): 612.
LU Shengguo, TANG Xingui, WU Shanghua, et al. J Inorg Mater (in Chinese), 2014, 29(1): 612.

[15]  ZENG Yike, QIN Xiaoye, JIANG Shenglin, et al. Effect of BaF2 addition on crystallization kinetics and dielectric properties of B2O3-Nb2O5-SrO-BaO glass-ceramics [J]. J Am Ceram Soc, 2011, 94(2): 469473.

[16]  MITOSERIU L, RICINSCHI D, HARNAGEA C, et al. Grain size dependence of switching properties of ferroelectric BaTiO3 ceramics [J]. Jpn J Appl Phys, 1996, 35: 52105216.

[17]  刘鹏, 姚熹. La调节Pb(Zr,Sn,Ti)O3反铁电陶瓷的相变与电学性质[J]. 物理学报, 2002, 51(7): 16211627.
LIU Peng, YAO Xi. Acta Phys Sin-ch(in Chinese), 2002, 51(7): 1621
1627.

[18]    LU S G, RO?I? B, ZHANG Q M, et al. Organic and inorganic relaxor ferroelectrics with giant electrocaloric effect [J]. Appl Phys Lett, 2010, 97: 162904.

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