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2 767 817

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IPC

C04B35/495(2006-01-01)

C04B35/645(2006-01-01)

C04B35/111(2006-01-01)

(21) (22)

Application

2021128074, 2021-09-24

(24)

Start date

2021-09-24

(22)

Actual filing date

2021-09-24

(45)

Published

2022-03-22

(72)

Inventor

Reznichenko Larisa AndreevnaAndriushin Konstantin PetrovichGlazunova Ekaterina ViktorovnaDudkina Svetlana IvanovnaMoisa Maksim OlegovichAndriushina Inna NikolaevnaVerbenko Ilia Aleksandrovich

(73)

Holder

Federalnoe Gosudarstvennoe Avtonomnoe Obrazovatelnoe Uchrezhdenie Vysshego Obrazovaniia Federalnyi Universitet»

CHARGE COMPOSITION FOR SINTERING FERRO-PIEZOELECTRIC CERAMIC MATERIAL BASED ON SODIUM NIOBATE Russian patent published in 2022 - IPC C04B35/495 C04B35/645 C04B35/111

Abstract RU 2767817 C1

FIELD: technological processes.

SUBSTANCE: invention relates to production of ferro-piezoelectric ceramic materials (FPEM) based on sodium niobate. Filling composition for sintering FPEM based on sodium niobate, which contains Al₂O₃ and an additive, contains powdered manganese oxide MnO and manganese carbonate MnCO₃ as an additive, with the following ratio of initial components, wt%: Al₂O₃ 80–85, MnO 7.5–10.0, MnCO₃ 7.5–10.0.

EFFECT: low sintering temperature during hot pressing of ceramic material based on sodium niobate, as well as high mechanical strength (σ) and mechanical quality factor (Q_M) and maintaining a complex of dielectric (ε^T₃₃/ε₀, ρ_v), piezoelectric (K_p, d₃₃) and ferroelastic (V₁^E) characteristics inherent in this material, sintered by a conventional method.

1 cl, 1 dwg, 2 tbl

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RU 2 767 817 C1

Authors

Reznichenko Larisa Andreevna

Andriushin Konstantin Petrovich

Glazunova Ekaterina Viktorovna

Dudkina Svetlana Ivanovna

Moisa Maksim Olegovich

Andriushina Inna Nikolaevna

Verbenko Ilia Aleksandrovich

Dates

2022-03-22—Published

2021-09-24—Filed