Process for forming particles having a uniform size distribution

Details Process for forming particles having a uniform size distribution Process for forming particles having a uniform size distribution

1993-04-29

1994-10-04

Beck, Shrive

Coating processes

Particles, flakes, or granules coated or encapsulated

4272133, 42721331, 42721334, 427215, 4274193, B05D 700

Patent

active

053524810

ABSTRACT:
A process is provided for fabricating coated particles of a substantially uniform particle size. The process comprises coating small particles of well-defined crystalline phases with a polymerized gel. The process results in a ball-type sol-gel coating of the particles to provide particles which have a narrow size distribution. In many instances, crystalline particles of irregular shape have a substantially spherical shape upon coating with the sol-gel. In instances where the core is a high melting point material, such as an oxide, nitride, or carbide, the coat formulation can effect a low sintering temperature, which permits forming films of the particles at a much lower temperature than would otherwise be possible.

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