Method and apparatus for drawing crystalline bodies from a melt

Details Method and apparatus for drawing crystalline bodies from a melt Method and apparatus for drawing crystalline bodies from a melt

1984-01-25

1985-12-10

Bernstein, Hiram H.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

422246, C30B 1534

Patent

active

045577935

ABSTRACT:
This invention involves a method and apparatus for drawing crystalline bodies from a melt by means of an open-ended drawing nozzle which determines the cross-sectional geometry of the crystalline body. The drawing nozzle is composed of a material which is resistant to the melt. The feed of melt proceeds from a reservoir situated at the lower end of the drawing nozzle and the melt is conveyed to the upper opening thereof by capillary action. In keeping with the present invention, there is provided a drawing nozzle which has an upper opening merging into a contoured surface such that the meniscus formed at the interface between the crystalline and molten phases is freely displaceable on the contoured surface into which the upper opening discharges.

REFERENCES:
patent: 4075055 (1978-02-01), Ciszek et al.
patent: 4211600 (1980-07-01), Cole
patent: 4268483 (1981-05-01), Davey et al.
patent: 4325917 (1982-04-01), Pets et al.
patent: 4353757 (1982-10-01), Kalejs et al.
Bulletin of the Academy of Sciences of the USSR-Physical Series No. 12, vol. 33, 1969, pp. 1775-1782, "Transactions of the Second Conference on Producing Semiconductor Single Crystals by Stepanov's Method and on Prospects for their Use in the Instrument Making Industry", (Leningrad, Apr. 10-12, 1968).

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