熔融沉积方法增材制造锆钛酸铅压电陶瓷  

Additive Manufacturing of Lead Zirconate Titanate Piezoelectric Ceramic by Fused Deposition Modeling

作　　者：刘月明 董浩霖 刘鹏 杨现锋 赵巍 谢志鹏[3] LIU Yueming;DONG Haolin;LIU Peng;YANG Xianfeng;ZHAO Wei;XIE Zhipeng(Changsha University of Science&Technology,College of Materials Science and Engineering,Changsha 410114,China;Tianjin Chengjian University,School of Materials Science and Engineering,Tianjin 300384,China;State Key Laboratory of New Ceramic and Fine Processing,School of Materials Science and Engineering,Tsinghua University,Beijing 100083,China)

机构地区：[1]长沙理工大学材料科学与工程学院,长沙410114 [2]天津城建大学材料科学与工程学院,天津300384 [3]清华大学,新型陶瓷与精细工艺国家重点实验室,北京100083

出　　处：《硅酸盐学报》2024年第6期1953-1961,共9页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(52172063);湖南省研究生科研创新项目(CX20210830)。

摘　　要：采用基于螺杆挤出的熔融沉积成型方法结合两步脱脂工艺增材制造了PZT压电陶瓷,研究了固相含量对耗材流变性质、密度和收缩率的影响,以87%(质量分数)耗材为主,观察了显微形貌并测试了电学性能。结果表明,制备的高固相低黏度打印混合料呈现典型的剪切变稀流变学性质,具有优异的打印性能,成功打印了壁厚1 mm的环形阵列、阵元间距为0.25 mm的矩形阵列和30°倾角的环形薄壁生坯样品,且PZT陶瓷样品层间结合良好,成功制备了无支撑球壳结构的PZT陶瓷样品。随着固相含量的增加,PZT陶瓷的密度随之升高,固相含量为87%时,PZT陶瓷的密度为7.82 g/cm^(3),压电常数d_(33)达到316pC/N,为制备复杂结构的PZT压电陶瓷提供了新的思路。Introduction Lead zirconate titanate(PZT)piezoelectric ceramics are widely used in electronic components.With the continuous development of intelligent,integrated and lightweight piezoelectric devices,the shape and structure of piezoelectric ceramic components become more complex.3D printing technology has potential advantages in the personalized manufacturing of complex ceramic parts,especially the fused deposition modeling(FDM)method,which has the advantages of high efficiency,low cost,and wide material adaptability.This paper was to prepare PZT piezoelectric ceramics by FDM.In addition,the process optimization,printing performance,sintering behavior,and electrical properties were also investigated.Methods A PZT powder with an average particle size of 2.85μm was used.An organic binder was composed of 58%paraffin wax(PW,purity:99%in mass fraction,the same below),5%stearic acid(SA,98%),20%Polyethylene(PE,99%),and 17%ethylene-vinyl acetate copolymer(EVA,98%).The ceramic powder and organic binder were thoroughly mixed by a double-roller mixing machine at 130℃for 60 min,and then crushed into granules of less than 5 mm.The solid loading of the feedstock was set to 83%,85%,87%,and 89%.A commercial extrusion printer(UP-R200,Shenzhen Uprise 3D Technology Co.,Ltd.,China)with the extrusion nozzle diameter of 0.5 mm,and the layer thickness of 0.2 mm for FDM was used in this study.The printing condition was printing temperature of 120℃,print speed of 40 mm/s,and printing platform temperature of 85℃.Some complex shaped parts like ring array,rectangular array,and thin-walled cylindrical structures were printed.The printed green bodies were firstly placed in kerosene for solvent debinding at 40℃for 20 h and then dried in an oven at 40℃for 15 h.The dried parts were heated at 600℃for 2 h.After thermal debinding,the samples were put into a crucible with a lid,buried on PZT powder,and sintered in the furnace at 1100℃for 2 h.The PZT ceramics coated with silver electrodes were polarized in an electric field of 2.5 kV/

关 键 词：3D打印 锆钛酸铅 熔融沉积成型 压电陶瓷 

分 类 号：TM282[一般工业技术—材料科学与工程]