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Metal oxide powder synthesis by the “emulsion combustion” method

Published online by Cambridge University Press:  31 January 2011

Takao Tani ,
Kazumasa Takatori ,
Naoyoshi Watanabe  and
Nobuo Kamiya
Takao Tani
Affiliation:
Toyota Central Res. & Dev. Labs., Inc.,41–1 Yokomichi, Nagakute, Aichi 480–11, Japan
Kazumasa Takatori
Affiliation:
Toyota Central Res. & Dev. Labs., Inc.,41–1 Yokomichi, Nagakute, Aichi 480–11, Japan
Naoyoshi Watanabe
Affiliation:
Toyota Central Res. & Dev. Labs., Inc.,41–1 Yokomichi, Nagakute, Aichi 480–11, Japan
Nobuo Kamiya
Affiliation:
Toyota Central Res. & Dev. Labs., Inc.,41–1 Yokomichi, Nagakute, Aichi 480–11, Japan
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Abstract

Alumina powders were synthesized by the emulsion combustion method, using w/o (water in oil) type emulsions with different aqueous microsphere sizes. The effects of microsphere size on the size and shape of the synthesized powder were evaluated. The powders were spherical and hollow in shape with a very thin shell (from 10 to 20 nm in thickness) when synthesized from large aqueous microspheres (from 200 nm to 1 μm). The sizes and specific surface areas of the powders were consistent with those calculated. Large particles, which did not correspond to the microsphere size, were obtained from small aqueous microspheres (6 nm). The short distance (7 nm) between microspheres causes the adhesion of particles during the firing process.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 5 , May 1998 , pp. 1099 - 1102
Copyright
Copyright © Materials Research Society 1998

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References

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