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2 836 848

(13)

(51)

IPC

H10N30/00(2023-01-01)

C04B35/491(2006-01-01)

(21) (22)

Application

2024122681, 2024-08-08

(24)

Start date

2024-08-08

(22)

Actual filing date

2024-08-08

(45)

Published

2025-03-24

(72)

Inventor

Rybianets Andrei NikolaevichShvetsova Natalia AleksandrovnaShvetsov Igor Aleksandrovich

(73)

Holder

Federal State Autonomous Educational Institution Of Higher Education Southern Federal University

METHOD OF PRODUCING POROUS COMPOSITE PIEZOELECTRIC MATERIAL Russian patent published in 2025 - IPC H10N30/00 C04B35/491

Abstract RU 2836848 C1

FIELD: piezoelectric or electrostrictive active materials.

SUBSTANCE: invention can be used to create broadband ultrasonic piezoelectric transducers operating in the frequency range from 100 kHz to 10 MHz. Method of producing a porous composite piezoelectric material consists in mixing a synthesized powder of an initial piezoceramic material of lead zirconate-titanate of the composition Pb_0.95Sr_0.05Ti_0.47Zr_0.53O₃ + 1 wt. % Nb₂O₅ with powder of blowing agent, which is pre-sintered and ground lead zirconate titanate piezoceramic material of composition Pb_0.96Sr_0.04Zr_0.4042Ti_0.435W_0.052Mg_0.052Sb_0.0426Li_0.0142O₃ with particle size of 50-100 mcm in amount of 35-50 vol. %, addition of polyvinyl plasticizer, pressing and sintering of workpiece.

EFFECT: increasing piezoelectric module d₃₃.

4 cl, 4 dwg, 1 tbl

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RU 2 836 848 C1

Authors

Rybianets Andrei Nikolaevich

Shvetsova Natalia Aleksandrovna

Shvetsov Igor Aleksandrovich

Dates

2025-03-24—Published

2024-08-08—Filed