Development of SHS-Method on a Dry Basis for Preparing Corundum Powder

Development of SHS-Method on a Dry Basis for Preparing Corundum Powder Development of corundum phase, crystal dimensions, degree of crystallization, specific surface, and microstructure are demonstrated, and data are shown for the practical yield of powder prepared in the course of combustion at a surface and within specimens using an SHS-method on a dry basis with application of two different fuels, i.e., citric acid and saccharose. Combustion within a specimen facilitates corundum phase development to the greatest extent independent of the fuel selected, crystal growth, and an increase in the degree of crystallization using citric acid. The greatest amount of heat of combustion released and its greater accumulation within a specimen with use of citric acid in the course of combustion facilitates development of a coarse-grained microstructure with coarser pores within the powder, and a little more specific surface (26.5 – m2/g) in contrast to powder (25.6 – m2/g) obtained in the course of combustion using saccharose, and correspondingly a greater practical yield of corundum powder. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

Development of SHS-Method on a Dry Basis for Preparing Corundum Powder

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Publisher
Springer Journals
Copyright
Copyright © 2013 by Springer Science+Business Media New York
Subject
Material Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Methods
ISSN
1083-4877
eISSN
1573-9139
D.O.I.
10.1007/s11148-013-9600-0
Publisher site
See Article on Publisher Site

Abstract

Development of corundum phase, crystal dimensions, degree of crystallization, specific surface, and microstructure are demonstrated, and data are shown for the practical yield of powder prepared in the course of combustion at a surface and within specimens using an SHS-method on a dry basis with application of two different fuels, i.e., citric acid and saccharose. Combustion within a specimen facilitates corundum phase development to the greatest extent independent of the fuel selected, crystal growth, and an increase in the degree of crystallization using citric acid. The greatest amount of heat of combustion released and its greater accumulation within a specimen with use of citric acid in the course of combustion facilitates development of a coarse-grained microstructure with coarser pores within the powder, and a little more specific surface (26.5 – m2/g) in contrast to powder (25.6 – m2/g) obtained in the course of combustion using saccharose, and correspondingly a greater practical yield of corundum powder.

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Dec 18, 2013

References

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