Abstract
A number of techniques have evolved over the past several years for the synthesis of ceramic powders. However, only few methods have addressed the issue of aggregation of nanoparticles. We have optimized a vapor phase synthesis process, called Combustion Flame-Chemical Vapor Condensation (CF-CVC), which involves pyrolysis of chemical precursors in a low pressure flat flame. By controlling processing parameters, we have produced nanopowders of oxides that have an average aggregate size ∼ 100nm; And an average primary particle size less than 25 nm.
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