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2 358 953

(13)

(51)

IPC

C04B35/495(2006-01-01)

(21) (22)

Application

2007115458/03, 2007-04-25

(24)

Start date

2007-04-25

(22)

Actual filing date

2007-04-25

(45)

Published

2009-06-20

(72)

Inventor

Reznichenko Larisa AndreevnaRazumovskaja Ol'Ga NikolaevnaVerbenko Il'Ja AleksandrovichJurasov Jurij IgorevichTitov Sergej Valer'Evich

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju

PIEZOELECTRIC CERAMIC MATERIAL Russian patent published in 2009 - IPC C04B35/495

Abstract RU 2358953 C2

FIELD: chemistry.

SUBSTANCE: present invention can be used in devices for defectoscopy of equipment of atomic reactors, working at high temperatures. The piezoelectric ceramic material based on lithium metaniobate contains oxides of lithium, niobium and strontium at the following ratio of components, wt %: Li₂O - 9.02÷9.17; Nb₂O₅ - 86.27÷86.77; SrO - 4.71÷4.06. The material is made using traditional ceramic processing technology.

EFFECT: attaining upper limit of working temperature, electromechanical coupling coefficient of the width of oscillation mode, piezoelectric modulus; ratio of electromechanical coupling coefficient of the width and planar oscillation mode and piezoelectric modulus approach infinity, which enables suppression of parasitic oscillations, distorting the operational signal.

2 ex, 2 tbl

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RU 2 358 953 C2

Authors

Reznichenko Larisa Andreevna

Razumovskaja Ol'Ga Nikolaevna

Verbenko Il'Ja Aleksandrovich

Jurasov Jurij Igorevich

Titov Sergej Valer'Evich

Dates

2009-06-20—Published

2007-04-25—Filed