Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1984-06-19
1986-05-27
Richman, Barry S.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
156617V, 156DIG72, 156DIG82, 156DIG83, C30B 106, C30B 2946
Patent
active
045914109
ABSTRACT:
A process for the production of monocrystalline Hg.sub.1-x Cd.sub.x Te wherein a molten mass of the desired composition x is cooled and solidified in a closed vessel and the solidified crystal is converted at temperatures below its melting point by high temperature recrystallization into the monocrystalline state, with an ampule of conical longitudinal cross-section being used as the closed vessel and the ampule being so held during the solidifying of the molten mass that the molten mass extends from the ample tip into the interior of the ampule. Undesired pressure is prevented from being exerted on the crystal by the ampule wall by the crystal only partially filling out the ampule interior and being conveyed into the ampule area of larger cross-section, and the recrystallization process is performed in a temperature zone with a longitudinal temperature gradient with the temperature decreasing in the direction of the larger ampule cross-section.
REFERENCES:
patent: 1793672 (1931-02-01), Bridgman
patent: 3622399 (1971-11-01), Johnson
patent: 3849205 (1974-11-01), Brau et al.
Semiconductors and Semimetals, vol. 18, 1981, edited by Willardson et al., pp. 63-70.
Gzybowski Michael S.
Richman Barry S.
Telefunken electronic GmbH
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