G - Physics
03
G
G03G 5/082 (2006.01) C01B 19/02 (2006.01)
Patent
CA 2047806
Disclosed is an alloying process which comprises, in the order stated (1) heating in a reaction vessel a mixture of selenium and tellurium from ambient temperature to from about 270°C to about 330°C while maintaining the mixture in a quiescent state; (2) maintaining the mixture at from about 270°C to about 330°C until the entire mixture has reached substantial equilibrium with respect to temperature while maintaining the mixture in a quiescent state; (3) subsequently heating the mixture from the range of from about 270°C to about 330°C to the range of from about 500°C to about 580°C while maintaining the mixture in a quiescent state; (4) maintaining the mixture at from about 500°C to about 580°C until the entire mixture has reached substantial equilibrium with respect to temperature while maintaining the mixture in a quiescent state; (5) thereafter maintaining the mixture at from about 500°C to about 580°C for from about 0.75 hour to about 1.5 hours while vigorously agitating the mixture; (6) subsequent to agitation, reducing the temperature of the mixture from the range of from about 500°C to about 580°C to the range of from about 425°C to about 450°C while maintaining the mixture in aquiescent state; (7) subsequently maintaining the temperature of the mixture at from about 425°C to about 450°C for from about 4 hours to about 7 hours while maintaining the mixture in a quiescent state; (8) reducing the temperature of the mixture from the range of from about 425°C to about 450°C to the range of from about 290°C to about 350°C while maintaining the mixture in a quiescent state; and (9) removing the mixture from the reaction vessel. Also disclosed is a process for preparing an imaging member which comprises preparing a selenium-tellurium alloy by the above process and vacuum evaporating the alloy onto a substrate.
L'invention porte sur un procédé d'alliage, consistant à : 1) chauffer dans une cuve de réaction un mélange de sélénium et de tellure en l'amenant de la température ambiante jusqu'à environ 270-330 degrés C, tout en le maintenant au repos; 2) maintenir le mélange à environ 270-330 degrés C jusqu'à ce que tout le mélange ait atteint une température d'équilibre appréciable, tout en le maintenant au repos; 3) chauffer ensuite le mélange de 270-330 degrés C environ à 500-580 degrés C environ, tout en le maintenant au repos; 4) maintenir le mélange à environ 500-580 degrés C jusqu'à ce que tout le mélange ait atteint une température d'équilibre appréciable, tout en le maintenant au repos; 5) maintenir ensuite le mélange à 500-580 degrés C environ pendant approximativement 0,75-1,5 heure en l'agitant énergiquement; 6) réduire la température du mélange de 500-580 degrés C environ à 425-450 degrés C environ, tout en le maintenant au repos; 7) maintenir ensuite la température du mélange à 425-450 degrés C environ pendant 4-7 heures, tout en le maintenant au repos; 8) réduire la température du mélange de 425-450 degrés C environ à 290-350 degrés C environ, tout en le maintenant au repos; 9) retirer le mélange de la cuve. L'invention présente également un procédé pour l'obtention d'un élément de visualisation, consistant à préparer un alliage de sélénium-tellure par la méthode ci-dessus et à évaporer l'alliage sous vide sur un substrat.
Hordon Monroe J.
Kowalczyk Lawrence E.
Sim & Mcburney
Xerox Corporation
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