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Structural design of PZT porous ceramics obtained via free-casting by ice-templating and performance exploration
Materials Research Bulletin ( IF 5.4 ) Pub Date : 2020-07-01 , DOI: 10.1016/j.materresbull.2020.110862
Manyu Zhang , Huajun Sun , Xiaofang Liu , Huiting Sui , Shibing Xiao

Abstract In this paper, water is used as ice-template to prepare 3-1 type porous lead zirconate titanate (PZT) ceramics with aligned porosity by freeze-casting process. To demonstrate the microstructure and performance, pretreatment of raw materials, viscosity of slurries, temperature of binder burnout, mechanical properties, dielectric constant ( e 33 T ) and piezoelectric coefficient (d33) as a function of solid content under the same single vertical temperature gradient condition are studied. The compressive strength of PZT poled perpendicular (PZT⊥) is 230% times of the PZT poled parallel (PZT║) along the freezing direction due to the characteristics of the layered pore structure. Meanwhile, the fabricated samples show relatively high e 33 T and d33 of 969 (at 103 Hz) and 400 pC/N, respectively. This work provides a novel preparation method for the manufacture of new piezoelectric materials with high-performance.

中文翻译:

冰模板自由浇注PZT多孔陶瓷结构设计及性能探索

摘要 本文以水为冰模板,采用冷冻铸造工艺制备了具有定向孔隙率的3-1型多孔锆钛酸铅(PZT)陶瓷。展示微观结构和性能、原材料的预处理、浆料的粘度、粘合剂烧尽的温度、机械性能、介电常数 (e 33 T ) 和压电系数 (d33) 作为固体含量在相同的单一垂直温度梯度下的函数条件进行研究。由于层状孔隙结构的特点,PZT垂直极化(PZT⊥)的抗压强度是沿冻结方向的PZT平行极化(PZT║)的230%。同时,制造的样品显示出相对较高的 e 33 T 和 d33 分别为 969(103 Hz)和 400 pC/N。
更新日期:2020-07-01
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