Enhancing dielectric properties of barium titanate macrofibers

被引：15

作者：

Sebastian, T. ^{[1
]}

Michalek, A. ^{[2
]}

Hedayati, M. ^{[1
,3
]}

Lusiola, T. ^{[1
]}

Clemens, F. ^{[1
]}

机构：

[1] Empa Swiss Fed Labs Mat Sci & Technol, Lab High Performance Ceram, Uberlandstr 129, CH-8600 Dubendorf, Switzerland

[2] Fachhsch Munster, Fachbereich Chem Ingn, Stegerwaldstr 39, D-48565 Steinfurt, Germany

[3] Tarbiat Modares Univ, Dept Mat Engn, Fac Engn, Tehran 14115143, Iran

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2019年 / 39卷 / 13期

基金：

瑞士国家科学基金会;

关键词：

Electrospinning; Piezoelectric; Thermoplastic processing; Nanofibers; Macrofibers; BaTiO3; BATIO3; CERAMICS; SINGLE-CRYSTALS; PIEZOELECTRIC PROPERTIES; THERMOPLASTIC EXTRUSION; BEHAVIOR; FIBERS;

D O I：

10.1016/j.jeurceramsoc.2019.05.040

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The motivation of this work was to improve the dielectric properties of BaTiO3 (BT) macrofibers by mixing BT nanofibers and commercial BT powder. BT nanofibers were fabricated via electrospinning synthesis. The calcined electrospun nanofibers were chopped and mixed with BT powder and converted in to a thermoplastic feedstock for extrusion of ceramic macrofibers with a diameter of 500 mu m. The electromechanical properties of the BaTiO3 macrofibers were investigated by varying calcination temperature of the nanofibers. For both nano and macro fibers, microstructure and phase composition was investigated by SEM and XRD. It could be observed that an increase in calcination temperature of the nanofibers enhanced the final electromechanical properties of the sintered macrofibers. The relative permittivity increased almost twice, the remanent polarisation increased about 4 times and the strain almost increased 10 times with the addition of calcined nanofibers to macrofibers.

引用

页码：3716 / 3721

页数：6

共 35 条

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