Pb的过量值对溶胶-水热法合成钙钛矿型PZT反铁电陶瓷粉体的影响

采用溶胶-水热法合成了具有单一钙钛矿结构的PZT反铁电陶瓷粉体。根据课题组前期的实验结果，选取的水热反应温度为180 ℃，水热反应时间为24 h，矿化剂KOH的浓度为3 mol/L，探讨了Pb的过量值对合成PZT陶瓷粉体的影响。实验发现，Pb的过量值过低，不足以补偿反应过程中Pb的损失量，A位的Pb缺失易导致PZT粉体结晶度的下降，颗粒结晶不完整。随着Pb过量值的增加，颗粒结晶增强，结晶也越完整。当Pb过量增加到10%时，实验获得了结晶良好的PZT粉体。因此，本实验Pb的最佳过量值为10%。

Abstract

PZT antiferroelectric ceramic powder with single perovskite structure was synthesized by sol-hydrothermal method. According to the test results of the research group in the early stage, the hydrothermal reaction temperature was selected as 180 ℃, the hydrothermal reaction time as 24 h, and the concentration of mineralizer KOH as 3 mol/L. The effects of the excessive value of Pb on the synthesis of PZT ceramic powder were discussed. It is found that the excessive value of Pb is too low to compensate for the loss of Pb in the reaction process. The loss of Pb at A position is easily lead to the decrease of the crystallinity of PZT powder and the incomplete crystallization of particles. With the increasing of Pb excessive value, the particle crystallization is enhanced and the crystallization is more complete. When the content of Pb increases to 10%, PZT powder with good crystallinity is obtained. Therefore, the best excessive value of Pb in this experiment is determined as 10%.

参考文献

[1] 韩刘洋.铁电/反铁电材料的相变行为及磁电耦合效应研究［D］.上海：中国科学院大学(中国科学院上海硅酸盐研究所), 2019.

[2] 潘祺.铁酸铋—钛酸钡陶瓷磁电耦合性能研究［D］.合肥:中国科学技术大学,2019.

[3] Zhao L, Liu Q, Gao J, et al. Lead-free antiferroelectric silver niobate tantalate with high energy storage performance［J］. Advanced Materials, 2017, 29(31)： 1701824.

[4] 张利文.锆钛酸铅镧反铁电厚膜的制备及储能行为研究［D］.北京：北京科技大学, 2019.

[5] 徐晨洪.脉冲电容器用反铁电陶瓷设计及其充放电行为研究［D］.上海:中国科学院大学(中国科学院上海硅酸盐研究所),2018.

[6] Hao X H, Zhai J W, Kong L B, et al. A comprehensive review on the progress of lead zirconate-based antiferroelectric materials［J］. Progress in Materials Science. 2014, 63: 1-57

[7] Wang X C, Shen J, Yang T Q, et al. High energy-storage performance and dielectric properties of antiferroelectric (Pb0.97La 0.02) (Zr0.5Sn0.5-xTix)O3 ceramic［J］. Journal of Alloys and Compounds. 2016, 655:309-313.

[8] Xu R, Xu Z, Feng Y J, et al. Fatigue resistance of Pb0.90La0.04Ba0.04［(Zr0.6Sn0.4)0.85Ti0.15］O3 antiferroelectric ceramics under fast charge-discharge cycling［J］. Ceramics International. 2016, 42(7): 9094-9099.

[9] 周盈盈,高小琴,常钢，等.高性能锆钛酸铅(PZT)粉体的水热法合成及其压电陶瓷性能研究[J].湖北大学学报(自然科学版),2016(2):91-96+112.

[10] 刘世丰.溶胶-水热法制备纳米SrTiO3粉体及其表面包覆MgO复合陶瓷的制备和性能研究[D].南宁：广西大学，2015.

[11] 陈志武，巫永鹏，何新华，等.溶胶-凝胶-水热法低温合成掺钛铁酸铋晶体（英文）[J].稀有金属材料与工程,2012,41(S3):527-531.

[12] 朱仁强.水热法制备锆钛酸铅基压电陶瓷粉体的研究［D］.南京：南京航空航天大学,2011.

[13] 余占军,胡艳华,王玉卓,等.二乙醇胺辅助溶胶-水热法低温合成四方形貌Pb(Zr0.52Ti0.48)O3粉体［J］.人工晶体学报,2015,44(5):1325-1329.

[14] 胡艳华,宋艳,李禄,等.水热条件对溶胶-水热法合成PZT陶瓷粉体的影响［J］.人工晶体学报,2017,46(6):1021-1025+1033.

胡艳华, 余占军, 王丽霞, 宋艳, 雷达. Pb的过量值对溶胶-水热法合成钙钛矿型PZT反铁电陶瓷粉体的影响[J]. 人工晶体学报, 2020, 49(10): 1930. HU Yanhua, YU Zhanjun, WANG Lixia, SONG Yan, LEI Da. Influence of Pb Excessive Value on the Synthesis of Perovskite PZT Antiferroelectric Ceramic Powder by Sol-Hydrothermal Method[J]. Journal of Synthetic Crystals, 2020, 49(10): 1930.

Pb的过量值对溶胶-水热法合成钙钛矿型PZT反铁电陶瓷粉体的影响

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