Glass powders, methods for producing glass powders and devices fabricated from same
AssigneeCabot Corporation
InventorsToivo T. Kodas, Mark J. Hampden-Smith, James Caruso, Quint H. Powell, Audunn Ludviksson
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Abstract
Glass powders and methods for producing glass powders. The powders preferably have a small particle size, narrow size distribution and a spherical morphology. The method includes forming the particles by a spray pyrolysis technique. The invention also includes novel devices and products formed from the glass powders.
Claims71
A glass powder batch comprising complex glass particles, wherein said glass particles are substantially spherical and have a weight average particle size of not greater than about 10 μm.
A powder batch comprising complex glass particles, wherein said complex glass particles have a weight average particle size of from about 0.1 μm to about 5 μm and wherein at least about 80 weight percent of said glass particles are not larger than twice said average particle size.
A method for the production of glass particles, comprising the steps of:
- a) generating an aerosol of droplets from a liquid wherein said liquid comprises at least a first glass precursor;
- b) moving said droplets in a carrier gas;
- and
- c) pyrolyzing said droplets at a reaction temperature and for a residence time sufficient to remove liquid therefrom and convert said precursor to form glass particles.
A composition of matter, comprising:
- a) a liquid vehicle phase;
- and
- b) a functional phase dispersed throughout said vehicle phase, said functional phase comprising complex glass particles having a weight average particle size of not greater than about 10 μm and a particle size distribution wherein at least about 80 weight percent of said glass particles are not larger than twice said average particle size.
A thick-film paste composition, comprising:
- a) a binder phase;
- b) an organic vehicle phase;
- and
- c) a functional phase, wherein said functional phase comprises a complex dielectric glass composition in the form of dispersed particles wherein said particles are substantially spherical and have a weight average particle size of from about 0.1 μm to about 10 μm.
A method for making a plasma display panel comprising barrier ribs disposed between electrodes, comprising the steps of depositing a complex glass powder on a substrate in a predetermined pattern, wherein said glass powder comprises particles having an average particle size of not greater than about 5 μm and a particle size distribution wherein at least about 80 weight percent of said particles are not larger than about two times said average particle size.
Dependencies are inferred from the claim text.