Morphology of Al2O3 inclusions formed at Fe/Fe-Al interface
(2010) Ironmaking & Steelmaking : processes, products and applications — Vol. 37, n° 7, p. 496-501 (2010)
Files
irs2488.pdf
Restricted Access - Adobe PDF
- 523.4 KB
Details
- Authors
- Abstract
- Inside a silica tube, a piece of Al was brought in contact for a very short time (1-60 s) with liquid Fe containing different dissolved oxygen ((O) under bar) levels (170-1800 ppm) at 1600 degrees C. The purpose was to investigate the inclusion formation during the initial deoxidation period. Intermetallic compounds of the Fe-Al system appeared due to the interdiffusion of Fe and Al, and the reaction between (Al) under bar and (O) under bar at the interface gave rise to the formation of Al2O3 inclusions. These inclusions showed different characteristics according to the initial (O) under bar level in liquid Fe and the interaction time. With lower (O) under bar content, the amount of inclusions decreased and faceted particles were dominant among the morphologies. While increasing the (O) under bar content to 780 and 1800 ppm, the inclusion number increased drastically and numerous small spherical inclusions were observed. Further away from the reaction front, clusters of fine particles were formed through a collision-coagulation mechanism. The change in Al2O3 morphology with the initial (O) under bar content was interpreted as a consequence of different supersaturation degrees with respect to (Al) under bar and (O) under bar.
- Affiliations
Citations
Van Ende, M.-A., Guo, M. X., Proost, J., Blanpain, B., & Wollants, P. (2010). Morphology of Al2O3 inclusions formed at Fe/Fe-Al interface. Ironmaking & Steelmaking : processes, products and applications, 37(7), 496-501. https://doi.org/10.1179/030192310X12731438631886 (Original work published 2010)