Preparation of CaSiO3 whiskers from alkali halide fluxes

CaSiO3 whiskers were prepared from fine powder by use of alkali halide fluxes, NaCl, KCl, and their mixture. The CaSiO3 powder and the flux were mixed and heated at temperatures from 850 to 1000 C for 1 to 48 h. The average lengths, diameters and aspect ratios ranged from 3.24 to 10.5 micron, 0.33 t...

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Bibliographic Details
Published in:Journal of the European Ceramic Society 2000-07, Vol.20 (8), p.1099-1103
Main Authors: HAYASHI, S, SUGAI, M, NAKAGAWA, Z.-E, TAKEI, T, KAWASAKI, K, KATSUYAMA, T, YASUMORI, A, OKADA, K
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Physics
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Whiskers and dendrites (growth,structure, and nonelectronic properties)
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Summary:CaSiO3 whiskers were prepared from fine powder by use of alkali halide fluxes, NaCl, KCl, and their mixture. The CaSiO3 powder and the flux were mixed and heated at temperatures from 850 to 1000 C for 1 to 48 h. The average lengths, diameters and aspect ratios ranged from 3.24 to 10.5 micron, 0.33 to 1.12 micron and 7.1 to 21.7, respectively. The diameter of the whiskers increased with increasing heating temperature more rapidly than the length, so that the aspect ratio decreased with increasing temperature. The whiskers were considered to grow by an Ostwald ripening mechanism. 6 refs.
ISSN:0955-2219
1873-619X
DOI:10.1016/s0955-2219(99)00248-4