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Title: Counterflow diffusion flame synthesis of ceramic oxide powders

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.
 [1];  [2]
  1. (Baltimore, MD)
  2. (Towson, MD)
Issue Date:
OSTI Identifier:
Johns Hopkins University (Baltimore, MD) CHO
Patent Number(s):
US 5650130
Application Number:
Contract Number:
Research Org:
Johns Hopkins University (Baltimore, MD)
Country of Publication:
United States
counterflow; diffusion; flame; synthesis; ceramic; oxide; powders; methods; preparation; revealed; obtained; process; whereby; precursors; oxides; introduced; burner; converted; nature; powder; produced; determined; conditions; morphology; particle; size; crystalline; form; varied; temperature; precursor; concentration; ratio; gas; stream; velocity; process conditions; concentration ratio; ceramic oxides; process whereby; gas stream; particle size; oxide powder; ceramic oxide; oxide powders; gas velocity; crystalline form; counterflow diffusion; diffusion flame; flame synthesis; flame process; flow diffusion; /423/264/419/501/