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Microstructural Development in Nano-Crystalline Zinc Sulfide Powders

Published online by Cambridge University Press:  25 February 2011

Y. Han,
E.T. Voiles,
L.S. Chumbley and
M. Akinc
Y. Han
Affiliation:
Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011
E.T. Voiles
Affiliation:
Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011
L.S. Chumbley
Affiliation:
Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011
M. Akinc
Affiliation:
Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011
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Abstract

Monodispersed, spherical, submicron size zinc sulfide powders were previously prepared in our laboratory utilizing homogeneous precipitation by thermal decomposition of thioacetamide in acidic aqueous solutions. Electron microscopic investigations of these powders indicated that the individual particles were agglomerates of 8∼14 nm size crystallites. It has been known that zinc sulfide does not sinter under ambient pressure due to the covalent nature of its bonding, high melting point, and relatively high vapor pressures at elevated temperatures. The heat treatment of these nano-crystalline zinc sulfide powders, however, showed some degree of sintering at temperatures as low as 600°C under vacuum.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 286: Symposium J – Nanophase and Nanocomposite Materials , 1992, 99
Copyright
Copyright © Materials Research Society 1993

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References

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