Manufacture of a phosphor composition with hematite

Details Manufacture of a phosphor composition with hematite Manufacture of a phosphor composition with hematite

1998-07-24

2000-01-11

Beck, Shrive

Coating processes

Particles, flakes, or granules coated or encapsulated

Inorganic base

427157, 427218, 427 64, 427 68, 427377, B05D 700

Patent

active

060133147

ABSTRACT:
A method of manufacturing a phosphor composition of a phosphor comprising a pigment coating of hematite, includes a first step in which the phosphor is coated with an iron-containing starting compound for hematite, and a second step, in which the phosphor with the coating is calcined, thereby converting the iron-containing starting compound for hematite into hematite. The calcining operation is carried out in an atmosphere of a gas mixture of water vapor and an oxidizing gas.

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patent: 4804561 (1989-02-01), Tanioka et al.
patent: 4983573 (1991-01-01), Bolt et al.
patent: 5382452 (1995-01-01), Bruno et al.
patent: 5387436 (1995-02-01), Ronda et al.

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