Formation Conditions of Mg_2TiO_4 and MgAl_2O_4 in Ti-Mg-Al Complex Deoxidation of Molten Iron

スポンサーリンク

概要

• 論文の詳細を見る

• It is important to study the complex deoxidation equilibrium of molten iron in Ti–Mg–Al system from the view point of inclusion control. The equilibrium experiments between molten iron and TiOX–MgO–Al2O3 slag and the thermodynamic calculation on the complex deoxidation are conducted at 1973 K in the present study. The liquid phase region of TiOX–MgO–Al2O3 system in equilibrium with molten iron is clarified at 1973 K. The equilibrium compounds which are coexisted with the slag on the liquidus curve in the system are identified to be Mg2TiO4 and MgAl2O4. The equilibrium relation between the deoxidation products (Mg2TiO4 or MgAl2O4) and the composition of solute elements in steel is investigated, and the conditions that Mg2TiO4 forms instead of MgAl2O4 nor Al2O3 are examined in the complex deoxidation of Ti–Mg–Al system. When the aluminum content of molten iron is under 4 mass ppm, Mg2TiO4 forms over the wide concentration range. The concentration range of MgAl2O4 formation widens as the aluminum content of molten iron increases. It is necessary to increase Mg content and to decrease Al content in order to form Mg2TiO4 in the Ti–Mg–Al complex deoxidation of molten iron in the range Ti<0.01 mass%. However, it is difficult in the range of Ti>0.01 mass% to form Mg2TiO4.

• 社団法人 日本鉄鋼協会の論文
• 2009-07-15

著者

• ONO Hideki

  Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University

• USUI Tateo

  Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University

• NAKAJIMA Keiji

  Corporate Research & Development Laboratories, Sumitomo Metal Industries, Ltd.

• Ono Hideki

  Graduate School Of Engineering Osaka University

• Usui Tateo

  Division Of Materials And Manufacturing Science Graduate School Of Engineering Osaka University

• Nakajima Keiji

  Div. Of Applied Process Metallurgy Dep. Of Materials Sci. And Engineering Royal Inst. Of Technol. (k

• Nakajima Keiji

  Corporate Research & Development Laboratories Sumitomo Metals Industries Ltd.

• MARUO Ryota

  Graduate School of Engineering, Osaka University

• Maruo Ryota

  Graduate School Of Engineering Osaka University

• AGAWA Shingo

  Graduate School of Engineering, Osaka University

• Agawa Shingo

  Graduate School Of Engineering Osaka University

• Ono Hideki

  Division Of Materials And Manufacturing Science Graduate School Of Engineering Osaka University

関連論文

• Transport of Nitrogen from Molter Iron to the Gas Phase through a CaO-Al_2O_3 Melt
• Effect of Catalyst on Heterogeneous Nucleation in Fe-Ni-Cr Alloys
• Effect of Oxide Catalyst on Heterogeneous Nucleation in Fe-10mass%Ni Alloys
• Enrichment of Iron and Copper by the Use of Two Liquid Phases Separation
• Electrochemical Formation and Phase Control of La-Ni Alloy Films in LiCl-KCl Eutectic Melts
• Influence of O_2 Concentration on Dioxins Formation in Combustion Processes
• Inhibition of Dioxins Formation in a Combustion Furnace by Centrifugation and Recombustion Method at High Temperatures
• Formation Mechanism of Stable Swirling Flow Accompanied with Air-Core in Discharging Liquid through a Nozzle Settled at the Bottom of Container
• Simple removal of dioxins by injecting combustion gas into water
• Some Aspects on Grain Refining Additions with Focus on Clogging during Casting
• Nitrogen Removal from Molten Iron to Gas Phase through CaO-Al_2O_3-CaF_2 Melt
• Influence of Neodymium on the Deoxidation and Desulfurization Equilibria of Liquid Iron in the Fe-Nd-O-S(-Al) System at 1873K
• Prevention Method of Swirling Flow Generation in Discharging Liquid in the Reactor Vessel through a Nozzle
• Silicon Deoxidation Equilibrium of Molten Fe-Mo Alloy
• Size Distribution of Deoxidation Products with Ti, Pr and Ti/Pr in Fe-10mass%Ni Alloy
• Effects of Uniform and Gradient High Magnetic Fields on Gravity Segregation in Aluminum Alloys
• Influences of Flow Intensity, Cooling Rate and Nucleation Density at Ingot Surface on Deflective Growth of Dendrites for Al-based Alloy
• Prediction of Solidification Microstructure and Columnar-to-equiaxed Transition of Al-Si Alloy by Two-dimensional Cellular Automaton with "Decentred Square" Growth Algorithm
• Oxidation Behavior of Silicon and Carbon in Molten Iro-Carbon-Silicon Alloys with Carbon Dioxide
• Oxidation Behavior of Silicon and Carbon in Molten Iron-Carbon-Silicon Alloys with Carbon Dioxide
• Formation Conditions of Mg_2TiO_4 and MgAl_2O_4 in Ti-Mg-Al Complex Deoxidation of Molten Iron
• Effect of Residual Volatile Matter on Reduction of Iron Oxide in Semi-charcoal Composite Pellets
• Influence of Chlorine Forms and Dechlorination on Dioxins Formation/Suppression in the Combustion Processes (日韓資源リサイクル・材料化学に関する国際シンポジウム特集号)
• Measurement and Calculation of Nitrogen Removal Rate from Molten Iron through CaO-Al_2O_3 Melts
• Effect of Mineral Composition and Pore Structure on Reducibility of Composite Iron Ore Sinter
• Simple Removal Method of Dioxins in Wastewater by Adsorption on Polyolefin Particles
• Fundamental Experiments on the H_2 Gas Injection into the Lower Part of a Blast Furnace Shaft
• Solidified Structure Control of Metallic Materials by Static High Magnetic Fields
• Effects of Cu, Sn and W on the Rate of Nitrogen Dissociation on the Surface of Molten Iron
• Prediction of Solidification Paths for Fe-C-Cr Alloys by a Multiphase Segregation Model Coupled to Thermodynamic Equilibrium Calculations
• Restrictions of Physical Properties on Solidification Microstructures of Al-based Binary Alloys by Cellular Automaton
• Equilibrium Relationship between the Oxide Compounds in MgO-Al_2O_3-Ti_2O_3 and Molten Iron at 1873K
• Degree of Undercooling and Contact Angle of Pure Iron at 1933K on Single-crystal Al_2O_3, MgO, and MgAl_2O_4 under Argon Atmosphere with Controlled Oxygen Partial Pressure
• Liquid-Solid Interface Free Energies for Metals from Free-volume Method and Interface Structural Model
• The Equilibrium Relation of Immiscibility in an Fe-Cu-B System at 1873K
• Preface to the Special Issue on "Cutting Edge of Control of Solidification Microstructure"
• Influence of Oxide Particles and Residual Elements on Microstructure and Toughness in the Heat-Affected Zone of Low-Carbon Steel Deoxidized with Ti and Zr
• Separation of Dy from Model Magnet Scraps using Molten Salt Electrochemical Process (Selected Papers from the 6th ISEM '11-Sendai/Kansai, 2011)
• Oxidative Removal of Cu from Carbon-saturated Iron via Ag Phase into B_2O_3 Flux
• Equilibrium Relationships between Oxide Compounds in MgO-Ti_2O_3-Al_2O_3 with Iron at 1873 K and Variations in Stable Oxides with Temperature
• Liquid Immiscibility of Fe-Ag-Cu-B System
• Separation of Dy from Model Magnet Scraps Using Molten Salt Electrochemical Process
• Carbon Reduction Rate of Phosphorus in Oxide Melt

もっと見る 閉じる

スポンサーリンク