by Peter Bornmann, Tobias Hemsel, Walter Littmann, Ryo Ageba, Yoishi Kadota, Takeshi Morita
Abstract:
Direct ultrasound irradiation is advantageous to increase the efficiency of the hydrothermal method which can be used for the production of piezoelectric thin films and lead free piezoelectric ceramics. To apply ultrasound directly to the process transducer prototypes were developed regarding the boundary conditions of the hydrothermal method. LiNbO$_3$ and PIC 181 were proven as feasible materials for high temperature resistant transducers ($\geq 200^\circ C$). Resistance of the transducers horn against the corrosive mineralizer was achieved by using Hastelloy C-22. The efficiency of the ultrasound assisted hydrothermal method depends on the generated sound field. Impedance and sound field measurements have shown that the sound field depends on the filling level and the position and design of the transducer.
Reference:
Bornmann, P.; Hemsel, T.; Littmann, W.; Ageba, R.; Kadota, Y.; Morita, T.: Ultrasonic Transducer for the Hydrothermal Method. Journal of Korean Physical Society, volume 57, 2010.
Bibtex Entry:
@ARTICLE{Bornmann2010a,
author = {Peter Bornmann and Tobias Hemsel and Walter Littmann and Ryo Ageba
and Yoishi Kadota and Takeshi Morita},
title = {Ultrasonic Transducer for the Hydrothermal Method},
journal = {Journal of Korean Physical Society},
year = {2010},
volume = {57},
pages = {1122},
number = {4},
month = {October},
abstract = {Direct ultrasound irradiation is advantageous to increase the efficiency
of the hydrothermal method which can be used for the production of
piezoelectric thin films and lead free piezoelectric ceramics. To
apply ultrasound directly to the process transducer prototypes were
developed regarding the boundary conditions of the hydrothermal method.
LiNbO$_{3}$ and PIC 181 were proven as feasible materials for high
temperature resistant transducers ($\geq 200^\circ C$). Resistance
of the transducers horn against the corrosive mineralizer was achieved
by using Hastelloy C-22. The efficiency of the ultrasound assisted
hydrothermal method depends on the generated sound field. Impedance
and sound field measurements have shown that the sound field depends
on the filling level and the position and design of the transducer.},
bdsk-url-1 = {http://dx.doi.org/10.3938/jkps.57.1122},
booktitle = {Journal of Korean Physical Society},
doi = {10.3938/jkps.57.1122},
file = {Bornmann2010a.pdf:Bornmann2010a.pdf:PDF},
issn = {1948-5719},
keywords = {High-temperature transducer, Hydrothermal method, Lithium-niobate
transducer},
timestamp = {2013.09.26}
}