Reoxidation of Al-Ti Containing Steels by CaO-Al_2O_3-MgO-SiO_2 Slag
スポンサーリンク
概要
- 論文の詳細を見る
Reoxidation of liquid steel containing Al and Ti by 14%CaO-35%Al2O3-10%MgO-41%SiO2 (in mass%) slag was investigated at 1823 K with initial Al content of 820 mass ppm and Ti content varied from 100 to 500 mass ppm. It was observed that Al and Ti in the steel were simultaneously oxidized by SiO2 in the slag, and the soluble oxygen was supersaturated during the course, particularly with respect to Al. Based on the experimental results, a new mechanism of the reoxidation reaction was proposed, which involves chemical reactions both at the metal/slag interface and in the bulk metal. Self-dissociation of SiO2 into Si and O at the slag/metal interface was found to play an important role in both supersaturation of oxygen, and subsequent formation of complex oxide inclusions. Formation of inclusions having a two-layer structure where an Al2O3 core was enclosed by complex Al-Ti-O oxide was explained in relation with supersaturation of oxygen in the steel.
- 社団法人 日本鉄鋼協会の論文
- 2004-10-15
著者
-
JUNG In-Ho
Research Institute of Industrial Science & Technology (RIST)
-
Lee Hae-geon
Department Of Materials Science & Engineering Pohang University Of Science & Technology (pos
-
PARK Dong-Chul
Department of Materials Science & Engineering, Pohang University of Science and Technology (POSTECH)
-
RHEE Peter
Department of Materials Science & Engineering, Pohang University of Science and Technology (POSTECH)
-
Lee Hae-geon
Department Of Materials Science & Engineering Pohang University Of Science And Technology (poste
-
Rhee Peter
Department Of Materials Science & Engineering Pohang University Of Science And Technology (poste
-
Park Dong-chul
Department Of Materials Science & Engineering Pohang University Of Science And Technology (poste
関連論文
- Evolution of Size, Composition, and Morphology of Primary and Secondary Inclusions in Si/Mn and Si/Mn/Ti Deoxidized Steels
- Decarburisation of Liquid Fe-C-S Drops Using Multiple Oxidants of O_2, CO_2 and H_2O
- Decarburization Kinetics of Fe-C-S Droplets with H_2O
- Effect of System Geometry on Gas Phase Mass Transfer in Electromagnetic Levitation Assembly
- Phase Equilibria and Thermodynamic Properties of the CaO-MnO-Al_2O_3-SiO_2 System by Critical Evaluation, Modeling and Experiment
- Critical Thermodynamic Evaluation and Optimization of the CaO-MnO-SiO_2 and CaO-MnO-Al_2O_3 Systems
- Thermodynamic Modeling of Gas Solubility In Molten Slags (I) : Carbon and Nitrogen
- Smelting Reduction Mechanism of Fe-O-S Melts Using Solid Carbon
- Sulfur Transfer in Dynamic Conditions of Liquid Steel Drops Falling through Slag Layer
- Dissolution Rate of Al_2O_3 into Molten CaO-SiO_2-Al_2O_3 Slags
- Particle Removal from Liquid Phase Using Fine Gas Bubbles
- Decomposition of Li_2CO_3 by Interaction with SiO_2 in Mold Flux of Steel Continuous Casting
- Decomposition of Na_2CO_3 by Interaction with SiO_2 In Mold Flux of Steel Continuous Casting
- Modelling of Break-up of Liquid Drops Impacting on Immiscible Liquids
- Break-up Phenomena of Liquid Drops Impacting on Immiscible Liquids
- Cold Model Study on Inclusion Removal from Liquid Steel Using Fine Gas Bubbles
- A New Approach to Molten Steel Refining Using Fine Gas Bubbles
- Prediction of the Optimum Bubble Size for Inclusion Removal from Molten Steel by Flotation
- Thermodynamic Modeling of Gas Solubility in Molten Slags (II) : Water
- Effect of Al on the Evolution of Non-metallic Inclusions in the Mn-Si-Ti-Mg Deoxidized Steel During Solidification : Experiments and Thermodynamic Calculations
- Dissolution Behavior of Al_2O_3 and MgO Inclusions in the CaO-Al_2O_3-SiO_2 Slags : Formation of Ring-like Structure of MgAl_2O_4 and Ca_2SiO_4 around MgO Inclusions
- The Prediction of Gas Residence Times in Foaming CaO-SiO_2-FeO Slags
- Model Development of Slag Foaming
- Physical Model Studies on Slag Foaming
- Thermodynamic Evaluation of the Surface Tension of Molten CaO-SiO_2-AI_2O_3 Ternary Slag
- Wetting of Solid Al_2O_3 with Molten CaO-Al_2O_3-SiO_2
- Silicon and Manganese Transfer in Dynamic Conditions of Carbon-saturated Liquid Iron Drops Falling through Slag Layer
- 耐火物の浸食に対する熱力学データベースの利用技術
- Reoxidation of Al-Ti Containing Steels by CaO-Al_2O_3-MgO-SiO_2 Slag
- Precipitation and Growth of Non-metallic Inclusions during Solidification of Steels
- Inclusions Chemistry for Mn/Si Deoxidized Steels : Thermodynamic Predictions and Experimental Confirmations
- Critical Falling Heights for the First Break-up of Liquid Drops Impacting on Immiscible Liquids
- Numerical Modeling of Nucleation and Growth of Inclusions in Molten Steel Based on Mean Processing Parameters
- A Method for Evaluating Composition of Complex Inclusions Comprising Oxides and MnS in Si/Mn/Ti Deoxidized Steels
- Sulphur Partition between CaO-SiO2-Ce2O3 Slags and Carbon-saturated Iron.