Ceramic Powder Synthesis by Spray Pyrolysis

Gary Lynn Messing, Shi‐Chang ‐C Zhang, Gopal V. Jayanthi

Research output: Contribution to journalArticle

929 Citations (Scopus)

Abstract

A variety of spray pyrolysis (SP) techniques have been developed to directly produce ceramic powders from solutions. This paper reviews the current status of these processes in terms of the process parameters that enable the formation of particles with controlled morphology and composition. A model incorporating solute diffusion in the droplet and solvent evaporation from the droplet surface is presented to establish the critical parameters leading to solid particle formation. The model illustrates that solid particles can be obtained if solutes with high solubility and a large difference between the critical supersaturation and equilibrium concentration are used and if the process is designed to avoid solvent boiling. It is demonstrated that mixed metal oxide, non‐oxide, and composite particles that are solid, hollow, porous, or fibrous can be produced by modifying the precursor characteristics, solution properties, and process parameters. The physical and chemical flexibility of SP processes offers numerous opportunities for the controlled synthesis of advanced ceramic powders and films. However, production rates are limited by the need to produce < 5‐μm‐diameter droplets and to avoid subsequent droplet coagulation. Developments in process controls, atomization, and system design are required for wider commercialization of SP‐type processes.

Original languageEnglish (US)
Pages (from-to)2707-2726
Number of pages20
JournalJournal of the American Ceramic Society
Volume76
Issue number11
DOIs
StatePublished - Jan 1 1993

Fingerprint

Spray pyrolysis
ceramics
Powders
pyrolysis
spray
droplet
solute
Supersaturation
commercialization
Atomization
supersaturation
Coagulation
coagulation
Oxides
Boiling liquids
Process control
Evaporation
solubility
Solubility
evaporation

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Messing, Gary Lynn ; Zhang, Shi‐Chang ‐C ; Jayanthi, Gopal V. / Ceramic Powder Synthesis by Spray Pyrolysis. In: Journal of the American Ceramic Society. 1993 ; Vol. 76, No. 11. pp. 2707-2726.
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Ceramic Powder Synthesis by Spray Pyrolysis. / Messing, Gary Lynn; Zhang, Shi‐Chang ‐C; Jayanthi, Gopal V.

In: Journal of the American Ceramic Society, Vol. 76, No. 11, 01.01.1993, p. 2707-2726.

Research output: Contribution to journalArticle

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