Synthesis of spherical {beta}-silicon carbide particles by ultrasonic spray pyrolysis

Journal Article · Thu Aug 01 00:00:00 EDT 1996 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1996.tb08964.x· OSTI ID:382474

Cerovic, L S; Milonjic, S K ^[1]; Zivkovic, L V ^[2]; Uskokovic, D P ^[3]

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1. Vinca Inst. of Nuclear Sciences, Belgrade (Yugoslavia)
2. Nis Univ. (Yugoslavia). Faculty of Electronic Engineering
3. Serbian Academy of Sciences and Arts, Belgrade (Yugoslavia). Inst. of Technical Sciences

Fine agglomerate-free spherical {beta}-SiC powder was synthesized from a dispersion of colloidal silica, saccharose, and boric acid, by means of an ultrasonic spray pyrolysis method. Droplets of 2.2 {micro}m were formed with an aerosol generator, operated at 2.5 MHz, and carried into a reaction furnace at 900 C with argon. Spherical X-ray amorphous gel particles of 1.1 {micro}m were obtained. {beta}-SiC particles with a mean diameter of 0.79 {micro}m and spherical shape resulted when the SiC gel precursor particles were heated at 1,500 C in argon.

• Sponsoring Organization: USDOE
• OSTI ID: 382474
• Journal Information: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 8 Vol. 79; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMORPHOUS STATE
ATOMIZATION
BORIC ACID
GELS
HEAT TREATMENTS
PARTICLE SIZE
REDUCTION
SACCHAROSE
SCANNING ELECTRON MICROSCOPY
SILICA
SILICON CARBIDES
SPHERES
SYNTHESIS
X-RAY DIFFRACTION