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2 072 399

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C1

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IPC

(21) (22)

Application

4855703/26, 1990-07-31

(22)

Actual filing date

1990-07-31

(45)

Published

1997-01-27

(72)

Inventor

Shtejnberg A.S.Raduchev V.A.Denisevich V.V.

(73)

Holder

Institut Strukturnoj Makrokinetiki Ran

METHOD OF PREPARING MONOCRYSTALS OF REFRACTORY SUBSTANCES Russian patent published in 1997 - IPC

Abstract RU 2072399 C1

FIELD: refractory materials. SUBSTANCE: initial blend is fused in a cold container in pulse mode being subjected to alternating melting and subsequent cooling to a temperature constituting 0.8-1.0 boiling temperature. This procedure is repeated 2-7 times, each time, after cooling, substance is allowed to stand for 0.1-20 min. Needle and plate crystals 3.5 mm in size are obtained suitable for electrical engineering, instrumental engineering, and high-temperature technics. EFFECT: improved quality of product. 1 tbl

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RU 2 072 399 C1

Authors

Shtejnberg A.S.

Raduchev V.A.

Denisevich V.V.

Dates

1997-01-27—Published

1990-07-31—Filed

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