Method for producing small hollow spheres

Details Method for producing small hollow spheres Method for producing small hollow spheres

1977-06-16

1979-01-09

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

Utilizing electrical energy

264 13, 264 24, 264 42, 423277, 423326, 428406, B01J 202

Patent

active

041338545

ABSTRACT:
Method for producing small hollow spheres of glass, metal or plastic, wherein the sphere material is mixed with or contains as part of the composition a blowing agent which decomposes at high temperature (T .gtorsim. 600.degree. C). As the temperature is quickly raised, the blowing agent decomposes and the resulting gas expands from within, thus forming a hollow sphere of controllable thickness. The thus produced hollow spheres (20 to 10.sup.3 .mu.m) have a variety of application, and are particularly useful in the fabrication of targets for laser implosion such as neutron sources, laser fusion physics studies, and laser initiated fusion power plants.

REFERENCES:
patent: 3347798 (1967-10-01), Baer et al.
patent: 3975194 (1976-08-01), Farnand et al.
Hendricks, C. D., Micron & Submicron Particle Production IEEE Transaction Industry Publications, vol. IA-10, No. 4, Jul./Aug. 1974.

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