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High-Rate Formation of Nano-Scale Alumina Particles

Published online by Cambridge University Press:  25 February 2011

A. Kilian ,
L. Reinhart ,
A. Davis ,
T.F. Morse  and
D.C. Paine
A. Kilian
Affiliation:
Division of Engineering, Brown University Providence, R.I. 02912, (401)863-3930
L. Reinhart
Affiliation:
Division of Engineering, Brown University Providence, R.I. 02912, (401)863-3930
A. Davis
Affiliation:
Division of Engineering, Brown University Providence, R.I. 02912, (401)863-3930
T.F. Morse
Affiliation:
Division of Engineering, Brown University Providence, R.I. 02912, (401)863-3930
D.C. Paine
Affiliation:
Division of Engineering, Brown University Providence, R.I. 02912, (401)863-3930
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Abstract

In this paper we report a new approach to the problem of high rate formation of nanophase powders. In our experiments we were able to make aluminum oxide particles in the size range from 5 to 140 nm (peaking sharply at 35 nm) at a rate of 3 g/min. The starting material was a mixture of aluminum-tri-sec-butoxide and sec-butanol. An aerosol was made from this solution and subsequently burned in a special torch, described below. The resulting particles were spherical and no necked regions were observable between them. In a practical application, our technique allows a large production rate while still approaching the ideal of nano-scale monodispersed particles. The work was extended to the formation of zirconium oxide particles with quite similar results in the size distribution.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 249: Symposium Q – Synthesis and Processing of Ceramics: Scientific Issues , 1991 , 145
Copyright
Copyright © Materials Research Society 1992

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References

REFERENCES

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