Observation of inclusions in manganese-silicon killed steels at steel-gas and steel-slag interfaces

被引：48
作者：
Vantilt, S
Coletti, B
Blanpain, B
Fransaer, J
Wollants, P
Sridhar, S
机构：
[1] Ugine & ALZ, B-3600 Genk, Belgium
[2] Katholieke Univ Leuven, Dept Met & Mat Engn, Louvain, Belgium
[3] Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA
[4] Katholieke Univ Leuven, Dept Met & Mat Engn, Louvain, Belgium
来源：
ISIJ INTERNATIONAL | 2004年 / 44卷 / 01期
关键词：
confocal scanning laser microscope-; manganese-silicon killed steel; non-metallic inclusions; steel surface; steel-slag interface; force analysis;
D O I：
10.2355/isijinternational.44.1
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The behaviour of inclusions on the surface of molten steel and at molten steel-slag interfaces was observed in-situ using a Confocal Scanning Laser Microscope (CSLM). Solid irregular and liquid spherical inclusions were observed on the molten steel surfaces. They were found to cluster and agglomerate, driven by capillary depression forces and they were identified as Al2O3-MnO-SiO2, Al2O3-MnO and Al2O3 particles in quenched samples. At steel-slag interfaces, inclusion clustering was also observed. Here a weak repulsive force was found to oppose fluid flow driven clustering. The inclusions were found to react with the slag and to undergo changes in shape, size and chemistry. Examination of the interface after the experiments revealed that the inclusions were enriched in CaO, SiO2 and Al2O3 from the slag.
引用
收藏
页码：1 / 10
页数：10
相关论文
共 20 条
[1]   FactSage thermochemical software and databases [J].
Bale, C ;
Chartrand, P ;
Degterov, SA ;
Eriksson, G ;
Hack, K ;
Ben Mahfoud, R ;
Melançon, J ;
Pelton, AD ;
Petersen, S .
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 2002, 26 (02) :189-228
[2]   Observation of calcium aluminate inclusions at interfaces between Ca-treated, Al-killed steels and slags [J].
Coletti, B ;
Vantilt, S ;
Blanpain, B ;
Sridhar, S .
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2003, 34 (05) :533-538
[3]  
DEKKERS R, 2002, THESIS KATHOLIEKE U, P28
[4]  
Engh T. A., 1992, PRINCIPLES METAL REF, P1
[5]   Connection of the generalized Shuttleworth equation for the elastic spherical electrode with the Laplace formula and the Gibbs adsorption equation [J].
Grafov, BM ;
Paasch, G ;
Plieth, W ;
Bund, A .
ELECTROCHIMICA ACTA, 2003, 48 (05) :581-587
[6]  
Jacobi H, 2002, SIXTH INTERNATIONAL CONFERENCE ON CLEAN STEEL, P195
[7]   Behavior of alumina-magnesia complex inclusions and magnesia inclusions on the surface of molten low-carbon steels [J].
Kimura, S ;
Nakajima, K ;
Mizoguchi, S .
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2001, 32 (01) :79-85
[8]   ENERGETICAL AND FORCE APPROACHES TO THE CAPILLARY INTERACTIONS BETWEEN PARTICLES ATTACHED TO A LIQUID FLUID INTERFACE [J].
KRALCHEVSKY, PA ;
PAUNOV, VN ;
DENKOV, ND ;
IVANOV, IB ;
NAGAYAMA, K .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1993, 155 (02) :420-437
[9]   Separation and dissolution of Al2O3 inclusions at slag/metal interfaces [J].
Lee, SH ;
Tse, C ;
Yi, KW ;
Misra, P ;
Chevrier, V ;
Orrling, C ;
Sridhar, S ;
Cramb, AW .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 2001, 282 (01) :41-48
[10]   Interaction between inclusion particles on the stainless-steel melt surface [J].
Luo, HW .
SCANDINAVIAN JOURNAL OF METALLURGY, 2001, 30 (04) :212-219
12