High-temperature-immersion ultrasonic probe without delay line using PbTiO3/Pb(Zr,Ti)O-3 ultrasonic transducer

摘要

The behavior of a high-temperature-immersion ultrasonic probe without a delay line using a PbTiO3/Pb(Zr,Ti)O-3 (PT/PZT) ultrasonic transducer was investigated empirically. A similar to 100-mu m-thick PT/PZT film was fabricated on a 200-mu m-thick stainless steel substrate. After PT/PZT film fabrication, the substrate was bonded to a stainless steel pipe using a high-temperature waterproof adhesive material. The probe was tested in a water bath from room temperature to 100 degrees C for system verification. During three thermal cycles, the ultrasonic echoes had a high signal-to-noise ratio (SNR) and reasonable repeatability. After that, the same probe was verified by testing it in the silicone oil from room temperature to 200 degrees C. The test was also repeated three times and the probe successfully demonstrated high-temperature durability, a high SNR, and repeatability throughout the experiments. (C) 2015 The Japan Society of Applied Physics