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Counterflow diffusion flame synthesis of ceramic oxide powders

United States Patent

*** EXPIRED ***
July 22, 1997
View the Complete Patent at the US Patent & Trademark Office
Ceramic oxide powders and methods for their preparation are revealed. Ceramic oxide powders are obtained using a flame process whereby one or more precursors of ceramic oxides are introduced into a counterflow diffusion flame burner wherein the precursors are converted into ceramic oxide powders. The nature of the ceramic oxide powder produced is determined by process conditions. The morphology, particle size, and crystalline form of the ceramic oxide powders may be varied by the temperature of the flame, the precursor concentration ratio, the gas stream and the gas velocity.
Katz; Joseph L. (Baltimore, MD), Miquel; Philippe F. (Towson, MD)
The Johns Hopkins University (Baltimore, MD)
08/ 466,787
June 6, 1995
The invention disclosed and claimed herein was made in the course of research funded in part under Department of Energy Grant No. DE-FG02-88ER45356. The Government may have certain rights in the invention .