Process of preparing crystals of compounds and alloys

Details Process of preparing crystals of compounds and alloys Process of preparing crystals of compounds and alloys

1974-11-27

1977-08-09

Emery, Stephen J.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156616R, 156616A, 156621, 156624, B01J 1226

Patent

active

040408949

ABSTRACT:
A liquid phase, which comprises either at least one of the constituents of the compound or alloy of which the crystal is to be prepared, or a foreign material, is fed continuously at its surface with the other constituent or constituents of this compound or alloy (or with all the constituents when the liquid phase comprises a foreign material). This liquid phase is subjected to two successive temperature gradients the first of which is slight and the second steep, so that the constituents are transported through the liquid phase and so that the crystallization of the compound or alloy takes place at the level of the second gradient. The liquid phase and the temperature gradients are displaced with respect to each other at a speed determined such that the composition of the liquid phase does not change and such that the crystallization always takes place at the same temperature.

REFERENCES:
patent: 2792287 (1957-05-01), Moore, Jr. et al.
patent: 3318669 (1967-05-01), Folberth
patent: 3507625 (1970-04-01), Deyris
patent: 3514265 (1970-05-01), Pastore
patent: 3519399 (1970-07-01), Kyle
patent: 3520810 (1970-07-01), Plaspett
patent: 3615203 (1971-10-01), Kaneko
patent: 3767473 (1973-10-01), Ayel
patent: 3853487 (1974-12-01), Meuleman
patent: 3870473 (1975-03-01), Kyle
patent: 3877883 (1975-04-01), Berkman
Blum et al., IBM Tech. Disclosure Bulletin, vol. 9, No. 12, May 1967, pp. 1674-1676.
Blum et al., J. Electrochem. Soc.: Solid State Science, Mar. 1968, pp. 314-325, vol. 115, No. 3.
Lawson et al., Preparation of Single Crystals, 1958, Butterworths' Press, pp. 14-20.
Fischer, J. of Electrochem. Soc., vol. 117, No. 2, Feb. 1970, pp. 41C-47C.

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