Method for coating phosphor particles

Details Method for coating phosphor particles Method for coating phosphor particles

1985-04-03

1986-04-29

Lusignan, Michael R.

Coating processes

Particles, flakes, or granules coated or encapsulated

Solid encapsulation process utilizing an emulsion or...

427 68, 427 70, 427215, 4272552, B05D 506, B05D 512, B05D 700, C23C 1600

Patent

active

045856737

ABSTRACT:
Disclosed is a method for applying a continuous protective coating to the surface of individual phosphor particles. The method involves chemical vapor deposition of the protective coating on individual particles of a phosphor powder while the phosphor particles are suspended in a fluidized bed. During the method, the fluidized particles are exposed to the vaporized coating precursor material at a first temperature, which is less than the decomposition temperature of the precursor material, and the precursor material is reacted to form the desired coating material at a second temperature, which is greater than or equal to the temperature at which the precursor material reacts to form the coating material.

REFERENCES:
patent: 2151496 (1939-03-01), Beese
patent: 2586304 (1952-02-01), Coltman
patent: 2817599 (1957-12-01), Edwards et al.
patent: 2878137 (1959-03-01), Butler et al.
patent: 2920003 (1960-01-01), Davis
patent: 2971859 (1961-02-01), Sisneros et al.
patent: 3251337 (1966-05-01), Latta et al.
patent: 3408223 (1968-10-01), Shortes
patent: 3549412 (1970-12-01), Frey et al.
patent: 3875449 (1975-04-01), Byler et al.
patent: 3923682 (1975-12-01), Dale et al.
patent: 3963639 (1976-06-01), Klein
patent: 3984587 (1976-10-01), Lipp
patent: 4243909 (1981-01-01), Brecher et al.
patent: 4287229 (1981-09-01), Watanabe et al.
patent: 4339501 (1982-07-01), Inoue et al.
patent: 4440800 (1984-04-01), Morton et al.
patent: 4459507 (1984-07-01), Flaherty
patent: 4473634 (1984-09-01), Dodds et al.
patent: 4515827 (1985-05-01), Dodds et al.
Duffy, M. T. et al, Chemical Vapor Deposition of Aluminum Oxide Films from Organo-Aluminum Compounds, RCA Review, Dec. 1970.
Mezentsera, I. A., Study of an Increase in the Stability of Halophosphate Luminophors by the Application of Protective Coatings, Soviet Union, 1980.
Lehmann, W., An Analysis of Color-Changing Penetration-Type Cathode-Luminescent Phosphor Screens, J. Electrochem. Soc: Solid State Science and Technology, 128(8): 1787(1981).
Technical Bulletin Pigments, Lovezzola-Ward Co., Inc., No. 56, pp. 1-5.
Frantz, Joseph F., Design for Fluidization, pp. 89-93, Chemical Engineering, Oct. 1, 1962.
Kirk-Othmer, Second Edition, Encyclopedia of Chemical Technology, vol. 9, 1966, pp. 398-405.
Geldart, D., Types of Gas Fluidization, Nov. 1, 1972, pp. E19-E26.
Geldart, Dr. Derek, Gas Fluidization, Oct. 29-Nov. 1, 1984, 5 pages.

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