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2 152 371

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IPC

(21) (22)

Application

98121599/03, 1998-11-26

(24)

Start date

1998-11-26

(22)

Actual filing date

1998-11-26

(45)

Published

2000-07-10

(72)

Inventor

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

(73)

Holder

Nauchnoe Konstruktorsko-Tekhnologicheskoe Bjuro Rostovskogo Gosudarstvennogo Universiteta

PIEZOCERAMIC MATERIAL Russian patent published in 2000 - IPC

Abstract RU 2152371 C1

FIELD: manufacture of instrument for medical diagnostics and acoustic transformers. SUBSTANCE: piezoceramic material comprises oxides of lead, zirconium, titanium, cadmium, tungsten, cobalt, germanium and boron, ratios of components being as follows, wt %: PbO, 67.34-68.69; ZrO₂, 19.52-19.62; TiO₂, 10.75-10.80; CdO, 0.38-0.39; WO₃, 0.69-0.70; CoO, 0.98- 0.99; GeO₂, 0.08-0.15; and B₂O₃, 0.10-0.11. Invention makes it possible to prepare piezoceramic material with lower dielectric permeability (tgδ = 0,7-0,9%) and higher sensitivity to strain (g₃₃= 41-48•10^-3 Bm/H) by method of conventional ceramic technology. EFFECT: improved properties of the piezoceramic material. 3 tbl

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RU 2 152 371 C1

Authors

Smotrakov V.G.

Eremkin V.V.

Panich A.E.

Vusevker Ju.A.

Dates

2000-07-10—Published

1998-11-26—Filed