Method and a device for manufacturing a powder of amorphous cera

Details Method and a device for manufacturing a powder of amorphous cera Method and a device for manufacturing a powder of amorphous cera

1989-09-01

1990-10-30

Fertig, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

By extrusion spraying or gravity fall through orifice

75338, 75341, 264 5, 264 12, 425 6, 425 7, B29B 910

Patent

active

049667378

ABSTRACT:
A method and a device for manufacturing a powder of amorphous ceramic or metallic particles in a high pressure autoclave. The substance in the liquid state is pressed out of a nozzle (7) upwards in vertical direction. An acoustic levitation field acts on the area in front of the nozzle orifice (12) and an inert cooling gas is made to flow turbulently in this area so that the droplets sprayed out of the nozzle are rapidly cooled and get solidified to grains. The powder can be directly machined by pressing and sintering into objects of the desired shape.

REFERENCES:
patent: 4035116 (1977-07-01), O'Brien et al.
patent: 4447251 (1984-05-01), Dunn et al.
patent: 4553917 (1985-11-01), Lee
patent: 4723994 (1988-02-01), Ovshinsky et al.
patent: 4801411 (1989-01-01), Wellinghoff et al.

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