化工学报 ›› 2022, Vol. 73 ›› Issue (8): 3768-3775.DOI: 10.11949/0438-1157.20220245

• 材料化学工程与纳米技术 • 上一篇    下一篇

织构PNN-PZT陶瓷的光固化成型制备及其电学性能研究

陆遥1(), 董杰1, 孙大为1, 谢乐天1, 卢家勇1, 杜晓宁2   

  1. 1.沈阳化工大学材料科学与工程学院,辽宁 沈阳 110142
    2.沈阳先进涂层材料产业技术研究院,辽宁 沈阳 110300
  • 收稿日期:2022-02-24 修回日期:2022-04-14 出版日期:2022-08-05 发布日期:2022-09-06
  • 通讯作者: 陆遥
  • 作者简介:陆遥(1985—),男,博士,讲师,luyao915@syuct.edu.cn
  • 基金资助:
    辽宁省教育厅科学研究项目(LQ2020008);大学生创新创业训练计划项目(202010149003)

Fabrication and electrical properties of textured PNN-PZT ceramics by stereolithography technology

Yao LU1(), Jie DONG1, Dawei SUN1, Letian XIE1, Jiayong LU1, Xiaoning DU2   

  1. 1.School of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, Liaoning, China
    2.Shenyang Research Institute of Industrial Technology for Advanced Coating Materials, Shenyang 110300, Liaoning, China
  • Received:2022-02-24 Revised:2022-04-14 Online:2022-08-05 Published:2022-09-06
  • Contact: Yao LU

摘要:

为高效制备织构压电陶瓷,以球状Pb(Ni1/3Nb2/3)O3-PbZrO3-PbTiO3 (PNN-PZT) 为基体粉体,片状BaTiO3 (BT)为模板粉体,采用光固化成型技术代替传统流延技术制备织构压电陶瓷。研究了粉体形貌对打印浆料流动性的影响、浆料的光敏参数以及不同BT含量织构陶瓷的晶体结构和电学性能。结果表明,球状粉体浆料具有低黏度的特性,能够有效提高打印浆料的固含量,最大固含量可达86%(质量)。此时陶瓷浆料的临界曝光量与透射深度分别为127.5 mJ/cm2和21.1 μm。打印后的PNN-PZT-BT陶瓷沿[00l]c方向生长,BT模板粉体含量从1%增长到5%,陶瓷的织构度由42%增到92%。当BT含量为3%时,样品具有最高的压电常数d33=1047 pC/N。与传统的流延法相比,SLA技术的工艺优势在于制备周期短,稳定性高,能够有效降低织构陶瓷的制备难度。

关键词: 织构陶瓷, 光固化, 高固含浆料, 压电陶瓷

Abstract:

Textured Pb(Ni1/3Nb2/3)O3-PbZrO3-PbTiO3 (PNN-PZT) ceramics which were using spherical PNN-PZT powders as matrix and plate-like BaTiO3 (BT) powders as template were prepared by stereo lithography apparatus (SLA) method. The impact of powder morphology on the fluidity of printing paste, as well as the crystal structure, electrical properties of textured ceramics with different BaTiO3 contents were investigated. The results show that the spherical powder slurry is characterized by low viscosity, which can effectively increase the solid content of the printing slurry and the maximum solid content is 86%(mass). At this time, the critical energy density and curing depth of the ceramic slurry are 127.5 mJ/cm2 and 21.1 μm respectively. Using BT as template can effectively promote the growth of PNN-PZT-BT ceramics along the [00l]c direction, with the BT content increasing from 1% to 5%, the texture degree of ceramic texture increasing from 42% to 92%. The sample has the highest piezoelectric constant d33=1047 pC/N when the BT content is 3%. Compared with the traditional casting method, the process advantages of SLA technology are that the preparation cycle is short and the stability is high, which can effectively reduce the difficulty of preparing textured ceramics.

Key words: textured ceramics, stereolithography, high solid content slurry, piezoelectric ceramics

中图分类号: