TY - JOUR
T1 - Observation of Calcium Aluminate Inclusions at Interfaces between Ca-Treated, Al-Killed Steels and Slags
AU - Coletti, B.
AU - Vantilt, S.
AU - Blanpain, B.
AU - Sridhar, S.
N1 - Funding Information:
The authors thank IWT and FWO-Flanders for their financial support. The experimental facilities of the Center for Iron and Steelmaking, Carnegie Mellon University, are gratefully acknowledged. Sidmar is acknowledged for providing steel samples.
PY - 2003/10
Y1 - 2003/10
N2 - The evolution of Al2O3-CaO inclusions on molten steel surfaces and at molten steel/slag interfaces was observed in-situ through a confocal scanning laser microscope (CSLM) equipped with a gold-image furnace. Depending on the slag chemistry, some of the initially liquid inclusions evolved into irregular Al2O3 or SiO2-enriched inclusions during the separation across the interface. Inclusions were found to cluster at specific locations at the steel/slag interface. Unlike capillary-depression-driven clustering, which is observed on molten steel surfaces, a weak repulsive force opposes fluid-flow-driven clustering at the steel/slag interface. After clustering, the irregular solid inclusions were observed to agglomerate to form large aggregates.
AB - The evolution of Al2O3-CaO inclusions on molten steel surfaces and at molten steel/slag interfaces was observed in-situ through a confocal scanning laser microscope (CSLM) equipped with a gold-image furnace. Depending on the slag chemistry, some of the initially liquid inclusions evolved into irregular Al2O3 or SiO2-enriched inclusions during the separation across the interface. Inclusions were found to cluster at specific locations at the steel/slag interface. Unlike capillary-depression-driven clustering, which is observed on molten steel surfaces, a weak repulsive force opposes fluid-flow-driven clustering at the steel/slag interface. After clustering, the irregular solid inclusions were observed to agglomerate to form large aggregates.
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U2 - 10.1007/s11663-003-0021-1
DO - 10.1007/s11663-003-0021-1
M3 - Article
AN - SCOPUS:0142200444
SN - 1073-5615
VL - 34
SP - 533
EP - 538
JO - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
JF - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
IS - 5
ER -