织构PNN-PZT陶瓷的光固化成型制备及其电学性能研究  

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

作　　者：陆遥 董杰 孙大为 谢乐天 卢家勇 杜晓宁 LU Yao;DONG Jie;SUN Dawei;XIE Letian;LU Jiayong;DU Xiaoning(School of Materials Science and Engineering,Shenyang University of Chemical Technology,Shenyang 110142,Liaoning,China;Shenyang Research Institute of Industrial Technology for Advanced Coating Materials,Shenyang 110300,Liaoning,China)

机构地区：[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

出　　处：《化工学报》2022年第8期3768-3775,共8页CIESC Journal

基　　金：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)。

摘　　要：为高效制备织构压电陶瓷,以球状Pb(Ni_(1/3)Nb_(2/3))O_(3)-PbZrO_(3)-PbTiO_(3)(PNN-PZT)为基体粉体,片状BaTiO_(3)(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21.1μm。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d_(33)=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。Textured Pb(Ni_(1/3)Nb_(2/3))O_(3)-PbZrO_(3)-PbTiO_(3)(PNN-PZT)ceramics which were using spherical PNN-PZT powders as matrix and plate-like BaTiO_(3)(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 BaTiO_(3) 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/cm^(2)and 21.1μm 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 d_(33)=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.

关 键 词：织构陶瓷 光固化 高固含浆料 压电陶瓷 

分 类 号：TM282[一般工业技术—材料科学与工程]