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2 751 323

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IPC

C04B35/495(2006-01-01)

(21) (22)

Application

2020134604, 2020-10-21

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Start date

2020-10-21

(22)

Actual filing date

2020-10-21

(45)

Published

2021-07-13

(72)

Inventor

Reznichenko Larisa AndreevnaAndriushin Konstantin PetrovichGlazunova Ekaterina ViktorovnaDudkina Svetlana IvanovnaAndriushina Inna NikolaevnaVerbenko Ilia Aleksandrovich

(73)

Holder

Federalnoe Gosudarstvennoe Avtonomnoe Obrazovatelnoe Uchrezhdenie Vysshego Obrazovaniia Federalnyi Universitet"

LOW FREQUENCY SODIUM NIOBATE PIEZOELECTRIC CERAMIC MATERIAL Russian patent published in 2021 - IPC C04B35/495

Abstract RU 2751323 C1

FIELD: physics.

SUBSTANCE: invention can be used in ultrasonic flaw detection to create electromechanical transducers operating in the frequency range 130-170 kHz. The piezoelectric ceramic material contains the following components, wt. %: Na₂O -0.84-2.53; K₂O - 16.65-19.16; CdO - 6.96-6.98; Nb₂O₅ - 72.09-72.27; CaO - 0.46-0.76; SiO₂ - 0.49-0.82. The material is produced by solid-phase synthesis followed by sintering using conventional ceramic technology.

EFFECT: reducing the relative dielectric constant of polarized samples and mechanical quality factor, increasing coefficient of electromechanical coupling of the planar vibration mode, piezo sensitivity while maintaining a high speed of sound.

1 cl, 1 dwg, 4 tbl, 7 ex

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RU 2 751 323 C1

Authors

Reznichenko Larisa Andreevna

Andriushin Konstantin Petrovich

Glazunova Ekaterina Viktorovna

Dudkina Svetlana Ivanovna

Andriushina Inna Nikolaevna

Verbenko Ilia Aleksandrovich

Dates

2021-07-13—Published

2020-10-21—Filed