Ultrasonic probe

Details Ultrasonic probe Ultrasonic probe

1982-08-06

1984-07-03

Cooper, Jack

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310358, 252 629, G10K 1136, H01L 4118

Patent

active

044581726

ABSTRACT:
An ultrasonic probe includes a resonator made of a piezoelectric ceramic material which is obtained by subjecting a ceramic composition containing 44.7 to 46.3 mol % of PbO, 50.9 to 51.7 mol % of TiO.sub.2, 1.8 to 2.7 mol % of Sm.sub.2 O.sub.3 and 0.5 to 1.0 mol % of MnO.sub.2 to poling treatment in such a manner that the ceramic composition is applied with an electric field of 60 to 80 kV/cm at a temperature of 130.degree. to 160.degree. C.

REFERENCES:
patent: 4243541 (1981-01-01), Takeuchi et al.
patent: 4321155 (1982-03-01), Yamashita et al.

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