Method and apparatus for reducing residual stresses in crystals

Details Method and apparatus for reducing residual stresses in crystals Method and apparatus for reducing residual stresses in crystals

1977-01-24

1979-06-12

Bernstein, Hiram H.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including specific material of construction

156DIG73, B01J 1718

Patent

active

041580389

ABSTRACT:
A temperature profile controller is provided for cooling a crystal as it is pulled from a melt so that a substantially linear temperature gradient is established and maintained along the length of the crystal as it is cooled, whereby to prevent or reduce the occurrence of residual stresses in the crystal.

REFERENCES:
patent: 3060065 (1962-10-01), Orem
patent: 3342559 (1967-09-01), Dermatis
patent: 3650703 (1972-03-01), Labelle et al.
patent: 3961905 (1976-06-01), Rice

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