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2 186 748

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Application

2000106813/03, 2000-03-20

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Start date

2000-03-20

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Actual filing date

2000-03-20

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Published

2002-08-10

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Inventor

Vusevker Ju.A.Panich A.E.Smotrakov V.G.Eremkin V.V.Ladakin G.K.

(73)

Holder

Nauchnoe Konstruktorsko-Tekhnologicheskoe Bjuro Rostovskogo Gosudarstvennogo Universiteta

PIEZOCERAMIC MATERIAL Russian patent published in 2002 - IPC

Abstract RU 2186748 C2

FIELD: acoustics. SUBSTANCE: invention relates to development of piezoceramic members for hydroacoustic devices working in regimes both admission and radiation. Piezoceramic material comprises oxides in the following ratio, wt. %: PbO, 65.84-66.03; ZrO2, 19.64-19.67; TiO2, 11.43-11.51; SrO, 1.55-1.56; Nb2O5, 0.29-0.58; ZnO, 0.20-0.36; MnO, 0.11-0.20; La2O3, 0.26-0.46; Bi2O3, 0.39-0.68. The produced piezoceramic material of mean Seignette hardness shows value tgδ = 0.23-0.48%; value Ce.m.c., = 0.59-0.63 and high value d31 = ((145-190) x 10-12 C/H); Qm = 300-690. EFFECT: valuable properties and indices of piezoceramic material. 2 tbl

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RU 2 186 748 C2

Authors

Vusevker Ju.A.

Panich A.E.

Smotrakov V.G.

Eremkin V.V.

Ladakin G.K.

Dates

2002-08-10—Published

2000-03-20—Filed

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