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IPC

(21) (22)

Application

2002116748/15, 2002-06-25

(24)

Start date

2002-06-25

(22)

Actual filing date

2002-06-25

(45)

Published

2004-02-10

(72)

Inventor

Drobot D.V.Nikishina E.E.Lebedeva E.N.

(73)

Holder

Moskovskaja Gosudarstvennaja Akademija Tonkoj Khimicheskoj Tekhnologii Im. M.V. Lomonosova

METHOD OF PREPARING OXIDE POWDER OF Pb(MgNbO) Russian patent published in 2004 - IPC

Abstract RU 2223225 C1

FIELD: inorganic compounds technology. SUBSTANCE: invention relates to technology of preparing materials for radio and electronic facilities, in particular to preparing oxide powder of Pb(Mg_1/3Nb_2/3O₃). Niobium hydroxide is combined with aqueous solutions of lead and magnesium acetates, concentration of lead and magnesium in solution being, respectively, 0.110-0.120 and 0.580- 0.590 mole/l. Precipitation is conducted at pH 5-6 and precipitate is separated for mother liquor. Product is then subjected to heat treatment at 800-850 C. EFFECT: lowered heat treatment temperature, increased yield of product and its purity. 1 tbl

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RU 2 223 225 C1

Authors

Drobot D.V.

Nikishina E.E.

Lebedeva E.N.

Dates

2004-02-10—Published

2002-06-25—Filed