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1 752 023

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A1

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IPC

(21) (22)

Application

4874062/26, 1990-10-16

(22)

Actual filing date

1990-10-16

(45)

Published

1994-02-28

(72)

Inventor

Bondar' V.G.Martynov V.P.Burachas S.F.Pirogov E.N.Bondarenko S.K.Krivoshein V.I.

PROCESS FOR RESTORING CRUCIBLES OF NOBLE METALS FOR GROWING MONOCRYSTALS Russian patent published in 1994 - IPC

Abstract SU 1752023 A1

FIELD: industrial production of monocrystals. SUBSTANCE: deformed and cracked crucibles of platinum, iridium and platinum-rhodium are annealed at 1200-1400 deg C and a pressure of 10-1-10-3 for 0.5-5.0 hr, then rolled and the remaining cracks are welded up. EFFECT: greater efficiency of the process. 1 tbl

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SU 1 752 023 A1

Authors

Bondar' V.G.

Martynov V.P.

Burachas S.F.

Pirogov E.N.

Bondarenko S.K.

Krivoshein V.I.

Dates

1994-02-28—Published

1990-10-16—Filed

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