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Aerosol processing of YBaCuO superconductors in a flame reactor

Published online by Cambridge University Press:  31 January 2011

Michael R. Zachariah  and
Serge Huzarewicz
Michael R. Zachariah
Affiliation:
Center for Chemical Technology, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
Serge Huzarewicz
Affiliation:
Center for Chemical Technology, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
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Abstract

Submicron YBa2Cu3O7−δ particles have been produced in an aerosol flame reactor by a spray pyrolysis method in which an aerosol composed of an aqueous solution of Y, Ba, and Cu nitrate salts was introduced into a flame. It was observed that the configuration of the flame is particularly important for the successful application of the method. A premixed flame gave particles with an x-ray diffraction pattern resembling the XRD spectra of materials exposed to high concentrations of water vapor. An over-ventilated diffusion flame configuration produced the desired result: submicron unagglomerated, solid crystalline particles with Tc = 92 K.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 2 , February 1991 , pp. 264 - 269
Copyright
Copyright © Materials Research Society 1991

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