Title

High-temperature (>500°C) ultrasonic transducers: An experimental comparison among three candidate piezoelectric materials

RIS ID

106737

Publication Details

Parks, D. A., Zhang, S. & Tittmann, B. R. (2013). High-temperature (>500°C) ultrasonic transducers: An experimental comparison among three candidate piezoelectric materials. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 60 (5), 1010-1015.

Abstract

High-temperature piezoelectric crystals, including YCa4O(BO 3)3, LiNbO3, and AlN, have been studied for use in ultrasonic transducers under continuous operation for 55 h at 550 °C. Additionally, thermal ratcheting tests were performed on the transducers by subjecting the crystals to heat treatments followed by ultrasonic performance testing at room temperature and 500°C. The changes resulting from the heat treatments were less than the statistical spread obtained in repeated experiments and were thus considered negligible. Finally, in situ measurements of the pulse-echo response of YCa4O(BO 3)3 were performed at temperatures up to 950 °C for the first time, showing stable characteristics up to these high temperatures. 1986-2012 IEEE.

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Link to publisher version (DOI)

http://dx.doi.org/10.1109/TUFFC.2013.2659