Rapid CO2 laser sintering of Ba0.5Sr1.5Na0.6K0.4Nb5O15 piezoelectric ceramic

Author

Du, Xinyu ; Ji, Lingfei ; Jiang, Yijian

Author_Institution

Inst. of Laser Eng., Beijing Univ. of Technol., Beijing, China

fYear

2009

fDate

23-27 Aug. 2009

Firstpage

1

Lastpage

3

Abstract

Dense tungsten bronze Ba_0.5Sr_1.5Na_0.6K_0.4Nb₅O₁₅ [(BSKNN) x=1.5, y=0.4] piezoelectric ceramic is produced by CO₂ laser sintering method of 9 minute duration. The observed XRD spectra indicate that both laser sintered and furnace sintered ceramic are of crystallized tungsten bronze structure. Microstructure examination of both laser and furnace sintered ceramics show the former have smaller grain size, fewer pores and a greater density of 4.87 g/cm³. The laser sintered Ba_0.5Sr_1.5Na_0.6K_0.4Nb₅O₁₅ [(BSKNN) x=1.5, y=0.4] ceramic demonstrate piezoelectric properties for; maximum reached polarization and remnant polarization, P_m=8.27 muC/cm² and P_r=3.25 muC/cm², coercive field of E_c=7.01 kV/cm. The piezoelectric constant d₃₃=55 pC/N.

Keywords

X-ray diffraction; barium compounds; crystallisation; ferroelectric ceramics; ferroelectric coercive field; ferroelectric transitions; laser sintering; permittivity; piezoceramics; potassium compounds; sodium compounds; strontium compounds; Ba_0.5Sr_1.5Na_0.6K_0.4Nb₅O₁₅; XRD spectra; coercive field; crystallization; dielectric permittivity; ferroelectric materials; ferroelectric phase transition; furnace sintered ceramics; grain size; laser sintered ceramics; piezoelectric ceramics; piezoelectric constant; piezoelectric properties; rapid CO₂ laser sintering method; remnant polarization; time 9 min; Ceramics; Crystallization; Furnaces; Grain size; Laser sintering; Niobium; Piezoelectric polarization; Strontium; Tungsten; X-ray scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2009. ISAF 2009. 18th IEEE International Symposium on the

Conference_Location

Xian

ISSN

1099-4734

Print_ISBN

978-1-4244-4970-5

Electronic_ISBN

1099-4734

Type

conf

DOI

10.1109/ISAF.2009.5307604

Filename

5307604