Bismuth Titanate Fabricated by Spray-on Deposition and Microwave Sintering For High-Temperature Ultrasonic Transducers

被引：25

作者：

Searfass, Clifford T. ^{[1
]}

Pheil, C. ^{[2
]}

Sinding, K. ^{[3
]}

Tittmann, B. R. ^{[4
]}

Baba, A. ^{[5
]}

Agrawal, D. K. ^{[4
]}

机构：

[1] Struct Integr Associates, State Coll, PA 16801 USA

[2] Red Frog Events LLC, Chicago, IL 60654 USA

[3] Penn State Univ, University Pk, PA 16802 USA

[4] Penn State Univ, Dept Engn Sci & Mech, University Pk, PA 16802 USA

[5] Hitachi Ltd, Hitachi, Ibaraki 3191221, Japan

来源：

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 2016年 / 63卷 / 01期

关键词：

Spray-on deposition; ultrasonic transducers; PIEZOELECTRIC MATERIALS; KINETICS; FILMS;

D O I：

10.1109/TUFFC.2015.2501241

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Thick films of ferroelectric bismuth titanate (Bi4Ti3O12) have been fabricated by spray-on deposition in conjunction with microwave sintering for use as high-temperature ultrasonic transducers. The elastic modulus, density, permittivity, and conductivity of the films were characterized. Electro-mechanical properties of the films were estimated with a commercial d(33) meter which gave 16 pC/N. This value is higher than typically reported for bulk bismuth titanate; however, these films withstand higher field strengths during poling which is correlated with higher d(33) values. Films were capable of operating at 650 degrees C for roughly 5 min before depoling and can operate at 600 degrees C for at least 7 days.

引用

页码：139 / 146

页数：8

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