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Title: Method for introduction of gases into microspheres

Abstract

A method is described for producing small hollow glass spheres filled with a gas by introduction of the gas during formation of the hollow glass spheres. Hollow glass microspheres having a diameter up to about 500..mu.. with both thin walls (0.5 to 4/sub ..mu../) and thick walls (5 to 20/sub ..mu../) that contain various fill gases, such as Ar, Kr, Xe, Br, D, H/sub 2/, DT, He, N/sub 2/, Ne, CO/sub 2/, etc., in the interior thereof, can be produced by the diffusion of the fill gas or gases into the microsphere during the formation thereof from a liquid droplet of glass-form-forming solution. This is accomplished by filling at least a portion of the multiple-zone drop-furnace used in producing hollow microspheres with the gas or gases of interest, and then taking advantage of the high rate of gaseous diffusion of the fill gas through the wall of the gel membrane before it transforms into a glass microsphere as it is processed in the multiple-zone furnace.

Inventors:
; ;
OSTI Identifier:
5356071
Assignee:
TIC; ERA-05-030338; EDB-80-088428
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; MICROSPHERES; FABRICATION; THERMONUCLEAR FUELS; DIFFUSION; GASES; SHELLS; FLUIDS; FUELS; 060201* - Fusion Fuels- Fabrication & Testing- (1980-1987)

Citation Formats

Hendricks, C.D., Koo, J.C., and Rosencwaig, A. Method for introduction of gases into microspheres. United States: N. p., Web.
Hendricks, C.D., Koo, J.C., & Rosencwaig, A. Method for introduction of gases into microspheres. United States.
Hendricks, C.D., Koo, J.C., and Rosencwaig, A. . "Method for introduction of gases into microspheres". United States.
@article{osti_5356071,
title = {Method for introduction of gases into microspheres},
author = {Hendricks, C.D. and Koo, J.C. and Rosencwaig, A.},
abstractNote = {A method is described for producing small hollow glass spheres filled with a gas by introduction of the gas during formation of the hollow glass spheres. Hollow glass microspheres having a diameter up to about 500..mu.. with both thin walls (0.5 to 4/sub ..mu../) and thick walls (5 to 20/sub ..mu../) that contain various fill gases, such as Ar, Kr, Xe, Br, D, H/sub 2/, DT, He, N/sub 2/, Ne, CO/sub 2/, etc., in the interior thereof, can be produced by the diffusion of the fill gas or gases into the microsphere during the formation thereof from a liquid droplet of glass-form-forming solution. This is accomplished by filling at least a portion of the multiple-zone drop-furnace used in producing hollow microspheres with the gas or gases of interest, and then taking advantage of the high rate of gaseous diffusion of the fill gas through the wall of the gel membrane before it transforms into a glass microsphere as it is processed in the multiple-zone furnace.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {},
month = {}
}