| Thermodynamic analysis on the formation mechanism of MgO·Al_2O_3 spinel type inclusions in casing steel |
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| 作者单位： | School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China |
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| 基金项目： | Acknowledgement The authors are very grateful for the help of Prof. Guo-guang Cheng in applying the structure model of slag. |
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| 摘 要： | MgO·Al2O3 spinel type inclusions in casing steel were analyzed by scanning electron microscope (SEM) and energy dispersive spectrometer (EDS).The results show that there are three forms.One is pure MgO·Al2O3 spinel,another is the composite oxide of the Mg-Al-Ca-Si-O system,and the third is the complex with oxide as a core covered by sulfide.The formation mechanisms were studied.The influences of slag basicity and vacuum degree on the magnesium content during the vacuum treatment of molten steel and furnace ...
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| 关 键 词： | 镁铝尖晶石 尖晶石型 夹杂物 热力学分析 机制 MgO 复合氧化物 扫描电子显微镜 |
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