PIEZOCERAMIC MATERIAL Russian patent published in 2003 - IPC

Abstract RU 2219143 C2

FIELD: ferro-rigid piezoceramic materials. SUBSTANCE: piezoceramic material comprises lead, zirconium, titanium, niobium, zinc and manganese oxides in the following ratio of components, wt.-%: PbO, 68.50-68.70; ZrO₂, 15.70- -16.70; TiO₂, 10.20-10.70; Nb₂O₅, 3.50-4.20; ZnO, 0.70-0.90; MnO, 0.30- -0.35. Material is prepared by two-staged solid-phase synthesis being the second stage of solid- phase synthesis is carried out at temperature 1170 K and caking is carried out in atmosphere of lead oxide. Material exhibits value tgδ, corresponding to the best values for compounds of this class (0.29%); value Kp = 0.56; high value d₃₁ (125 10^-12C/N) Q_m = 1000 and HT33

/H₀ = 1300. Use of invention is effective in creation of ultrasonic irradiators with high power and other articles of piezotechnique working at force regimens. EFFECT: valuable properties of material. 2 tbl

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RU 2 219 143 C2

Authors

Smotrakov V.G.

Eremkin V.V.

Bakirov A.A.

Nikitin Ja.S.

Dates

2003-12-20—Published

2001-12-19—Filed