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2 712 081

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IPC

C04B35/495(2006-01-01)

C04B35/00(2006-01-01)

(21) (22)

Application

2019124147, 2019-07-24

(24)

Start date

2019-07-24

(22)

Actual filing date

2019-07-24

(45)

Published

2020-01-24

(72)

Inventor

Reznichenko Larisa AndreevnaDudkina Svetlana IvanovnaRazumovskaya Olga NikolaevnaAndryushin Konstantin PetrovichAndryushina Inna NikolaevnaVerbenko Ilya Aleksandrovich

(73)

Holder

Federalnoe Gosudarstvennoe Avtonomnoe Obrazovatelnoe Uchrezhdenie Vysshego Obrazovaniya Federalnyj Universitet"

HIGH-TEMPERATURE PIEZOELECTRIC CERAMIC MATERIAL BASED ON LITHIUM METANIOBATE Russian patent published in 2020 - IPC C04B35/495 C04B35/00

Abstract RU 2712081 C1

FIELD: manufacturing technology.

SUBSTANCE: invention describes high-temperature piezoelectric ceramic material based on lithium metaniobate, which includes LiNbO₃ and additive A²⁺TiO₃, where A²⁺ – Cu, Ni, Co and composition corresponds to formula (1-x)LiNbO₃-xA²⁺TiO₃, wherein x=0.005–0.030.

EFFECT: high mechanical strength at compression up to 300 MPa, low sintering temperature to 960–990 °C while maintaining low dielectric permeability ε₃₃^T/ε₀=50–53, sufficiently high piezoelectric modulus d₃₃=9,8–11,90 pC/N and high speed of sound V_R=4,795–5,462 km/s.

1 cl, 2 tbl

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RU 2 712 081 C1

Authors

Reznichenko Larisa Andreevna

Dudkina Svetlana Ivanovna

Razumovskaya Olga Nikolaevna

Andryushin Konstantin Petrovich

Andryushina Inna Nikolaevna

Verbenko Ilya Aleksandrovich

Dates

2020-01-24—Published

2019-07-24—Filed