High Temperature Ultrasonic Transducer for Real-time Inspection

被引：10

作者：

Amini, Mohammad Hossein ^{[1
]}

Sinclair, Anthony N. ^{[1
]}

Coyle, Thomas W. ^{[2
]}

机构：

[1] Univ Toronto, Mech & Ind Engn Dept, Toronto, ON, Canada

[2] Univ Toronto, Mat Sci & Engn Dept, Toronto, ON, Canada

来源：

Proceedings of the 2015 ICU International Congress on Ultrasonics | 2015年 / 70卷

关键词：

High temperature Environment; Ultrasonic Transducer; Real-time Ultrasonic Inspection;

D O I：

10.1016/j.phpro.2015.08.081

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A broadband ultrasonic transducer with a novel porous ceramic backing layer is introduced to operate at 700 degrees C. 36 degrees Y-cut lithium niobate (LiNbO3) single crystal was selected for the piezoelectric element. By appropriate choice of constituent materials, porosity and pore size, the acoustic impedance and attenuation of a zirconia-based backing layer were optimized. An active brazing alloy with high temperature and chemical stability was selected to bond the transducer layers together. Prototype transducers have been tested at temperatures up to 700 degrees C. The experiments confirmed that transducer integrity was maintained. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

引用

页码：343 / 347

页数：5

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