Effect of Magnesium on Evolution of Oxide and Sulphide in Liquid Iron at 1 873 K

To reveal the effects of magnesium on the evolution of oxide and sulphide inclusions in liquid iron, both thermodynamic calculations and deoxidization experiments were carried out. The samples extracted from the liquid iron were polished and analyzed by optical microscopy and scanning electron micro...

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Bibliographic Details
Published in钢铁研究学报：英文版 Vol. 21; no. 12; pp. 1073 - 1080
Main Author Tong-sheng ZHANG De-yong WANG Mao-fa JIANG
Format Journal Article
LanguageEnglish
Published 2014
Subjects
复合夹杂物
扫描电子显微镜分析
氧化物
氧化镁
液态铁
演变
热力学计算
硫化物夹杂
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Summary:To reveal the effects of magnesium on the evolution of oxide and sulphide inclusions in liquid iron, both thermodynamic calculations and deoxidization experiments were carried out. The samples extracted from the liquid iron were polished and analyzed by optical microscopy and scanning electron microscopy. The results showed that magne sium could modify oxide and sulphide inclusions simultaneously. Spherical MgO and irregular spinel inclusions were observed in the samples. The elongated MnS inclusions were replaced by small MgO · MgS or MgO · MgS · MnS complex inclusions, and the sulphides were distributed dispersively. The evolution mechanisms of inclusions were discussed comprehensively, and a proposed model for the formation of oxysulphide was set up.
Bibliography:magnesium; inclusion; oxysulphide; thermodynamics; liquid iron
11-3678/TF
To reveal the effects of magnesium on the evolution of oxide and sulphide inclusions in liquid iron, both thermodynamic calculations and deoxidization experiments were carried out. The samples extracted from the liquid iron were polished and analyzed by optical microscopy and scanning electron microscopy. The results showed that magne sium could modify oxide and sulphide inclusions simultaneously. Spherical MgO and irregular spinel inclusions were observed in the samples. The elongated MnS inclusions were replaced by small MgO · MgS or MgO · MgS · MnS complex inclusions, and the sulphides were distributed dispersively. The evolution mechanisms of inclusions were discussed comprehensively, and a proposed model for the formation of oxysulphide was set up.
ISSN:1006-706X
2210-3988