Method and apparatus for making crystals

Details Method and apparatus for making crystals Method and apparatus for making crystals

1978-06-16

1980-09-23

Scovronek, Joseph

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156DIG83, 156DIG95, 422245, B01J 1210

Patent

active

042241006

ABSTRACT:
An apparatus and method for making single crystals of a high melting point substance by a crucibleless skull process are provided wherein the apparatus operates with less power consumption than comparable prior art systems. The apparatus utilizes a self-sealing and self-venting charge comprising a mass of the substance with a preformed vent therein, the mass being held and retained by a side wall made of a felt of the substance. The charge is retained by an encircling plurality of rods comprising a nonsusceptible material. The charge is heated by RF induction from the center of the charge to form a melt which extends outward. The melt is extended longitudinally by translating the charge in the RF field.

REFERENCES:
patent: 2872299 (1959-02-01), Celmer et al.
patent: 3051555 (1962-08-01), Rummel
patent: 3067139 (1962-12-01), Goorissen
patent: 3188373 (1965-06-01), Brunet et al.
patent: 3514265 (1970-05-01), Pastore
patent: 3582528 (1971-06-01), Seale et al.
patent: 3759670 (1973-09-01), Rummel
patent: 4049384 (1977-09-01), Wenckus et al.

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