Microstructural changes on the reduction of hematite to magnetite

Hayes, P. C. and Grieveson, P. (1981) Microstructural changes on the reduction of hematite to magnetite. Metallurgical Transactions B, 12 3: 579-587. doi:10.1007/BF02654330


Author Hayes, P. C.
Grieveson, P.
Title Microstructural changes on the reduction of hematite to magnetite
Journal name Metallurgical Transactions B
ISSN 0360-2141
1543-1916
Publication date 1981-01-01
Sub-type Article (original research)
DOI 10.1007/BF02654330
Open Access Status Not Open Access
Volume 12
Issue 3
Start page 579
End page 587
Total pages 9
Place of publication New York, NY, United States
Publisher Springer
Formatted abstract
The microstructures resulting from the reduction of hematite to magnetite have been examined for a wide range of temperatures and gas conditions. A transition in product morphology from plate or lath magnetite to porous magnetite was found to occur at a constant free energy difference between the reducing gas mixture and the hematite over a range of reaction temperatures. Direct observations of lath nucleation and growth are reported and show the self-accelerating effect of the Fe2O3 → Fe3O4 transformation. The limits of porous growth are discussed in terms of established theories of discontinuous precipitation and a mechanism for the formation of lath magnetite is proposed.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemical Engineering Publications
 
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Created: Wed, 16 Dec 2015, 01:37:38 EST by Vicki Thompson on behalf of School of Chemical Engineering