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Title: Apparatus for producing nanoscale ceramic powders

Abstract

An apparatus provides high temperature and short residence time conditions for the production of nanoscale ceramic powders. The apparatus includes a confinement structure having a multiple inclined surfaces for confining flame located between the surfaces so as to define a flame zone. A burner system employs one or more burners to provide flame to the flame zone. Each burner is located in the flame zone in close proximity to at least one of the inclined surfaces. A delivery system disposed adjacent the flame zone delivers an aerosol, comprising an organic or carbonaceous carrier material and a ceramic precursor, to the flame zone to expose the aerosol to a temperature sufficient to induce combustion of the carrier material and vaporization and nucleation, or diffusion and oxidation, of the ceramic precursor to form pure, crystalline, narrow size distribution, nanophase ceramic particles.

Inventors:
 [1];  [2];  [3]
  1. Andover, MA
  2. Windham, NH
  3. Little Compton, RI
Issue Date:
OSTI Identifier:
870811
Patent Number(s):
5599511
Application Number:
08/449,665
Assignee:
Physical Sciences, Inc. (Andover, MA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
apparatus; producing; nanoscale; ceramic; powders; provides; temperature; residence; time; conditions; production; confinement; structure; multiple; inclined; surfaces; confining; flame; located; define; zone; burner; employs; burners; provide; close; proximity; delivery; disposed; adjacent; delivers; aerosol; comprising; organic; carbonaceous; carrier; material; precursor; expose; sufficient; induce; combustion; vaporization; nucleation; diffusion; oxidation; form; pure; crystalline; narrow; size; distribution; nanophase; particles; narrow size; inclined surface; inclined surfaces; ceramic powder; apparatus provides; ceramic powders; size distribution; residence time; disposed adjacent; ceramic particles; close proximity; temperature sufficient; ceramic precursor; carrier material; ceramic particle; nanoscale ceramic; phase ceramic; multiple inclined; nanophase ceramic; time conditions; producing nanoscale; confinement structure; /422/75/264/

Citation Formats

Helble, Joseph J, Moniz, Gary A, and Morse, Theodore F. Apparatus for producing nanoscale ceramic powders. United States: N. p., 1997. Web.
Helble, Joseph J, Moniz, Gary A, & Morse, Theodore F. Apparatus for producing nanoscale ceramic powders. United States.
Helble, Joseph J, Moniz, Gary A, and Morse, Theodore F. Wed . "Apparatus for producing nanoscale ceramic powders". United States. https://www.osti.gov/servlets/purl/870811.
@article{osti_870811,
title = {Apparatus for producing nanoscale ceramic powders},
author = {Helble, Joseph J and Moniz, Gary A and Morse, Theodore F},
abstractNote = {An apparatus provides high temperature and short residence time conditions for the production of nanoscale ceramic powders. The apparatus includes a confinement structure having a multiple inclined surfaces for confining flame located between the surfaces so as to define a flame zone. A burner system employs one or more burners to provide flame to the flame zone. Each burner is located in the flame zone in close proximity to at least one of the inclined surfaces. A delivery system disposed adjacent the flame zone delivers an aerosol, comprising an organic or carbonaceous carrier material and a ceramic precursor, to the flame zone to expose the aerosol to a temperature sufficient to induce combustion of the carrier material and vaporization and nucleation, or diffusion and oxidation, of the ceramic precursor to form pure, crystalline, narrow size distribution, nanophase ceramic particles.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1997},
month = {Wed Jan 01 00:00:00 EST 1997}
}

Works referenced in this record:

Ultrafine BaPb1-xBixO3 powders prepared by the spray-ICP technique
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Production of Monodispersed Colloidal Particles
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Production of ultrafine metal oxide aerosol particles by thermal decomposition of metal alkoxide vapors
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Experimental control of ultrafine TiO2 particle generation from thermal decomposition of titanium tetraisopropoxide vapor
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Synthesis, characterization, and properties of nanophase TiO 2
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Nanometer Oxide Ceramic Particles With Controlled Agglomeration
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Aerosol flow reactor production of fine Y 1 Ba 2 Cu 3 O 7 powder: Fabrication of superconducting ceramics
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Factors determining the primary particle size of flame-generated inorganic aerosols
journal, March 1989


Aggregation and growth of submicron oxide particles in flames
journal, May 1982


Laser Synthesis of Si/C/N Powders from 1,1,1,3,3,3-Hexamethyldisilazane
journal, August 1986


Basic research needs on high temperature ceramics for energy applications
journal, June 1980