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2 236 489

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IPC

(21) (22)

Application

2003112604/15, 2003-04-30

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Start date

2003-04-30

(22)

Actual filing date

2003-04-30

(45)

Published

2004-09-20

(72)

Inventor

Konovalov N.I.Zebrev Ju.N.Kolmogorov Ju.G.Antonov A.N.Dudochkin E.K.Pokhlebaev M.I.

(73)

Holder

Konovalov Nikolaj IvanovichZebrev Jurij NikolaevichKolmogorov Jurij GeorgievichAntonov Aleksandr NikolaevichDudochkin Evgenij KonstantinovichPokhlebaev Mikhail Ivanovich

METHOD OF PREPARING ARTIFICIAL QUARTZ CRYSTALS Russian patent published in 2004 - IPC

Abstract RU 2236489 C1

FIELD: glassmaking.

SUBSTANCE: artificial quartz crystals are prepared under hydrothermal conditions by temperature drop technique involving preliminary hydrothermal reservoir of autoclave and growing crystals by recrystallization of quartz blend on vertically oriented inoculating crystal of ZY cut from water-alkali (Na₂CO₃ and/or NaOH) solution with 0.01-0.2 M lithium nitrate added.

EFFECT: improved quality of artificial crystals due to reduced concentration of solid inclusions.

2 cl, 1 dwg, 3 tbl

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RU 2 236 489 C1

Authors

Konovalov N.I.

Zebrev Ju.N.

Kolmogorov Ju.G.

Antonov A.N.

Dudochkin E.K.

Pokhlebaev M.I.

Dates

2004-09-20—Published

2003-04-30—Filed