Hollow mullite ceramic microspheres by water extraction of emulsified aqueous droplets
- Univ. of Illinois, Urbana, IL (United States). Dept. of Materials Sciences and Engineering
This paper describes a novel colloidal route for the preparation of hollow mullite ceramic microspheres with sizes in the range of 10 {mu}m. An emulsion technique was combined with a water extraction sol-gel process, to form an aqueous droplet dispersion and gel the resulting droplets by extracting water with a dehydrating liquid. The liquid-filled gelled microcapsules were then dried and fired to form hollow ceramic microspheres. Important processing variables controlling the microsphere morphology were determined and a formation mechanism was proposed. Due to its potential applications in microelectronic packaging, mullite was selected as the model material for the present work, but the synthesis technique may be used for making other single or multiphase ceramic composition.
- OSTI ID:
- 51562
- Report Number(s):
- CONF-940411--; ISBN 1-55899-246-4
- Country of Publication:
- United States
- Language:
- English
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