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2 057 210

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IPC

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Application

93016383/26, 1993-03-31

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Actual filing date

1993-03-31

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Published

1996-03-27

(72)

Inventor

Romanov L.N.Bulavin P.F.Sopeleva E.G.Khadzhi V.E.Evseeva I.B.Gordienko L.A.

(73)

Holder

Vserossijskij Nauchno-Issledovatel'Skij Institut Sinteza Mineral'Nogo Syr'Ja

CRYSTALLINE QUARTZ GROWING METHOD Russian patent published in 1996 - IPC

Abstract RU 2057210 C1

FIELD: production of crystalline quartz. SUBSTANCE: method involves growing crystalline quartz under hydrothermal conditions from sodium hydroxide solution with concentration of 3.5-5.0% by weight on rod-shaped seeds extending along crystallographic axis Y. In the process of growing, temperature difference rate is increased at the first stage by 0.2-0.5 C/day, at the second stage constant temperature difference is provided, at the third stage temperature difference rate is increased by 0.5-1.5 C/day. EFFECT: provision for obtaining of quartz crystals with stable piezoelectric properties and of standardized sizes. 3 dwg, 3 tbl

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RU 2 057 210 C1

Authors

Romanov L.N.

Bulavin P.F.

Sopeleva E.G.

Khadzhi V.E.

Evseeva I.B.

Gordienko L.A.

Dates

1996-03-27—Published

1993-03-31—Filed

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