Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Patent
1993-05-10
1995-09-05
Bell, Mark L.
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
501 1, 501 94, 423594, 423598, 423599, 423592, 423600, 423608, 423618, 423624, 423632, 423635, 423610, 423619, 423625, 423263, C01B 1320, C01B 1318
Patent
active
054477085
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.
REFERENCES:
patent: 3450503 (1969-06-01), Knorr
patent: 3510291 (1970-05-01), Brush
patent: 3993578 (1976-11-01), Gerontopoulos et al.
patent: 4042374 (1977-08-01), Rasmussen et al.
patent: 4065544 (1977-12-01), Hambling et al.
patent: 4724134 (1988-02-01), Sood
patent: 4783214 (1988-11-01), Kemp, Jr. et al.
patent: 4801411 (1989-01-01), Wellinghoff et al.
patent: 4812166 (1989-03-01), Saiki et al.
patent: 4849140 (1989-07-01), Wellinghoff et al.
patent: 4973777 (1990-11-01), Alagy et al.
patent: 4999182 (1991-03-01), Baumard et al.
patent: 5019686 (1991-05-01), Marantz
patent: 5061682 (1991-10-01), Aksay et al.
patent: 5075090 (1991-12-01), Lewis et al.
patent: 5081102 (1992-01-01), Gay et al.
patent: 5122360 (1992-06-01), Harris et al.
patent: 5124091 (1992-06-01), Paliwal et al.
Andres, R. P., et al., "Clusters and Cluster-Assembled Materials", Materials Research, 4:704-736 (1989) no month.
Bowen, H. Kent, "Basic Research Needs on High Temperature Ceramics for Energy Applications", Materials Science and Engineering, 44:1-56 (1980) no month.
Dagani, Ron, "Nanostructured Materials Promise To Advance Range of Technologies", Science/Technology, Nov. 23, 1992.
Helble, Joseph J., "Nanometer Oxide Ceramic Particles With Controlled Agglomeration", Materials & Processing Report, 5:3-4 (1991) no month.
Helble, Joseph J. et al., "Factors Determining the Primary Particle Size of Flame-Generated Inorganic Aerosols", J. of Colloid and Interface Science, 128:348-362 (1989) no month.
Kodas, T. T. et al., "Aerosol Flow Rector Production of Fine Y.sub.1 Ba.sub.2 Cu.sub.3 O.sub.7 Powder: Fabrication of Superconducting Ceramics", Applied Physics Letters, 52:1622-1624 (1988) no month.
Matijevic, Egon, "Production of Monodispersed Colloidal Particles", Annual Review of Materials Science, 15:483-516 (1985) no month.
Okuyama, Kikuo et al., "Production of Ultrafine Metal Oxide Aerosol Particles by Thermal Decomposition of Metal Alkoxide Vapors", AIChE J., 32:2010-2019 (1986) no month.
Okuyama, Kikuo, et al., "Experimental Control of Ultrafine TiO.sub.2 Particle Generation From Thermal Decomposition of Titanium Tetraisopropoxide Vapor", Chemical Engineering Science, 44:1369-1375 (1989) no month.
Ono, Tomoshige, et al., "Ultrafine BaPb.sub.1-x Bi.sub.x O.sub.3 Powders Prepared by the Spray-ICP Technique", Plasma Chemistry and Plasma Processing, 7:201-209 (1987) no month.
Rice, Gary W., "Laser Synthesis of Si/C/N Powders from 1,1,1,3,3,-Hexamethyldisilazane", J. of the American Ceramic Society, 69:C183-C185 (1986) no month.
Siegel, R. W., et al., "Synthesis, Characterization and Properties of Nanophase TiO.sub.2 ", J. Mater. Res., 3:1368-1372 (1988) no month.
Ulrich, Gail D. et al., "Aggregation and Growth of Submicron Oxide Particles in Flames", J. of Colloid and Interface Science, 7:257-265 (1982) no month.
Wakai, Fumihiro, "Effects of Solute Ion and Grain Size on Superplasticity of ZRO.sub.2 Polycrystals", J. of Materials Science, 26:241-247 (1991) no month.
Zachariah, M. R. et al., "Experimental and Numerical Studies on Refactory Particle Formation in Flames", High Temperature Science, 28:113-125 (1988-1989) no month.
Zhang, Shi-Chang et al., "Synthesis of Solid, Spherical Zirconia Particles by Spray Pyrolysis", J. of the American Ceramic Society, 73:61-67 (1990) no month.
Morse et al. "Overview of Fiber Optic Research at Brown", SPIE, Fiber Optic and Laser Sensors VII 1169 pp. 30-41 (1989) no month.
Egon Matijevic; "Production of Monodispersed Colloidal Particles" Ann. Rev. Mater. Sci. 15:483-516 (1985) no month.
Halble, "Nanometer Oxide Ceramic Particle with Controlled Agglomeration", Materials & Processing Report, vol. 5, No. 12, Mar. 1991, pp. 348-362.
Helble et al., "Factors Determining the Primary Particle Size of Flame-Generals Inorganic Aerosols", Jour. of Colloid and Interspace Science, vol. 128, 1989, pp. 3-4 no month.
Helble Joseph J.
Moniz Gary A.
Morse Theodore F.
Bell Mark L.
Bonne C. M.
Physical Sciences Inc.
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