Method and apparatus for producing small hollow spheres

Title: Method and apparatus for producing small hollow spheres

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Abstract

Method and apparatus 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.gtoreq.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.

Inventors:

Hendricks, Charles D ^[1]

Livermore, CA

Issue Date:: 1979-01-01

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

OSTI Identifier:: 863403

Patent Number(s):: 4163637

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

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Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T428/2996 - Glass particles or spheres

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S376/916 - Methods of making fusion fuel targets

C - CHEMISTRY C03 - GLASS C03B - MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
C03B19/1055 - {by extruding, e.g. dripping molten glass in a gaseous atmosphere}

C - CHEMISTRY C03 - GLASS C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
C03C11/002 - {Hollow glass particles}

B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B22F1/0051 - {Hollow particles}

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
B01J2/04 - in a gaseous medium {

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
Y02P40/57 - Reduction of reject rates

C - CHEMISTRY C03 - GLASS C03B - MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
C03B19/1075 - {by blowing, pressing, centrifuging, rolling or dripping}

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DOE Contract Number:: W-7405-ENG-48

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: method; apparatus; producing; hollow; spheres; glass; metal; plastic; sphere; material; mixed; contains; composition; blowing; agent; decomposes; temperature; gtoreq; 600; degree; quickly; raised; resulting; gas; expands; forming; controllable; thickness; produced; 20; 10; variety; application; particularly; useful; fabrication; targets; laser; implosion; neutron; sources; fusion; physics; studies; initiated; power; plants; power plants; hollow spheres; blowing agent; particularly useful; power plant; neutron source; laser fusion; produced hollow; neutron sources; fusion power; gas expands; laser initiated; sphere material; hollow sphere; /425/376/

Citation Formats


                    Hendricks, Charles D. Method and apparatus for producing small hollow spheres.  United States: N. p., 1979. 
        Web.

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                    Hendricks, Charles D. Method and apparatus for producing small hollow spheres.  United States.

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                    Hendricks, Charles D. Mon .  
        "Method and apparatus for producing small hollow spheres".  United States.  https://www.osti.gov/servlets/purl/863403.

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@article{osti_863403,

  title        = {Method and apparatus for producing small hollow spheres},

  author       = {Hendricks, Charles D},

  abstractNote = {Method and apparatus 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.gtoreq.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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1979},

  month        = {1}

}

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