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Patents

Apparatus for growing monocrystals (2102541)
RF Patent for an invention № 2102541
Published: 20.01.1998

 

Patent holder (s):
PJSC “State Research and Design Institute of Rare-Metal Industry “Giredmet”

 

Inventors:
V.Y. Zhvirblyansky, G.A. Zolotova

 

Appliance: the invention relates to technology of producing monocrystals by Czochralski method. It provides increasing of apparatus reliability and improving of monocrystal quality. Summary of the invention: apparatus contains growth chamber having top cover, furnace, seed holder with joint, and flexor connected to takeup drum by upper end. The mentioned takeup drum is located in enclosure installed on chamber cover. Enclosure and drum are connected by rotary drives. Flexor has extender connected to seed holder joint. Inside of the chamber, a socket of cone form is fixed to its top cover. Cone spigot is located in it, through which flexor is passed. Apparatus excludes flexor beating while rotating and crystal swinging, provides concentricity of seed holder and crucible, as well as perpendicularity of seed axis to crystal surface.


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