Apparatus for growing single crystals of high-melting oxides

Details Apparatus for growing single crystals of high-melting oxides Apparatus for growing single crystals of high-melting oxides

1974-12-30

1977-03-22

Serwin, R.E.

Chemistry: physical processes

Physical processes

Crystallization

156617H, 156617R, 13 16, 13DIG1, B01J 1708, H05B 512

Patent

active

040134210

ABSTRACT:
An apparatus in which a system of sheet screens surrounding the heating zone has an internal layer of tungsten rods extending towards the exit of the boat from the apparatus to define an annealing chamber. The coils of the heater are arranged so that the number of the heater sections under and above the boat is different to ensure uniform heating of the melt, the ends of the heater rods being clamped in the current lead buses and secured by means of locking pins.

REFERENCES:
patent: 2933384 (1960-04-01), Welker et al.
patent: 3139653 (1964-07-01), Orem
patent: 3273969 (1966-09-01), Sirgo
patent: 3401021 (1968-09-01), Tiller et al.
patent: 3401022 (1968-09-01), Marshall et al.

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