Apparatus for crystal growth in outer space

Details Apparatus for crystal growth in outer space Apparatus for crystal growth in outer space

1974-01-08

1976-12-28

Yudkoff, Norman

Chemistry: physical processes

Physical processes

Crystallization

23301, B01J 1700, B01J 1720

Patent

active

039999505

ABSTRACT:
To obtain semiconductor and other crystals of high crystal quality, a melt which is freely floating in a cosmic vacuum is produced. The melt is then solidified in an oriented state. The melting and pulling processes are carried out by using such a small, natural or artificial celestial body as a reference body, that the gravitational effect of the reference body upon the melt, is much smaller than the terrestrial weight of the melt.

REFERENCES:
patent: 2686864 (1954-08-01), Wroughton et al.
patent: 3258314 (1966-06-01), Redmond et al.

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