POROSITY PROFILES IN EMERGING MAGNETITE LAYER DURING THE REDUCTION OFHEMATITE

Authors
JANOWSKI J BARANSKI A SADOWSKI A
Citation
J. Janowski et al., POROSITY PROFILES IN EMERGING MAGNETITE LAYER DURING THE REDUCTION OFHEMATITE, Solid state ionics, 101, 1997, pp. 807-810
Citations number
5
Journal title
Solid state ionics → ACNP
ISSN journal
01672738
Volume
101
Year of publication
1997
Part
2
Pages
807 - 810
Database
ISI
SICI code
0167-2738(1997)101:<807:PPIEML>2.0.ZU;2-C
Abstract
The microscopic image analysis has been applied for determination of p orosity of hematite grains reduced to magnetite at 450 and 850 degrees C, At 450 degrees C, two kinds of voids were analysed: cracks and mic ropores inside subgrains created by crackling of the initial grain. At 850 degrees C, porosity profiles across the magnetite layers were vis ible. Also a temporal dependence of the local porosity has been observ ed. The porosity determined by mercury porosimeter agrees reasonably w ith microscopic data.