工业纯铁熔体外加TiO<sub>2</sub>及VC超细颗粒的试验

王国承; 黄浪; 方克明

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工业纯铁熔体外加TiO₂及VC超细颗粒的试验

1. 江西理工大学材料与化学工程学院, 江西赣州 341000;
2. 新余钢铁公司, 江西新余 338001;
3. 北京科技大学冶金与生态工程学院, 北京 100083

详细信息

作者简介:
王国承(1977-),男,江西瑞昌人,博士,讲师,主要从事钢铁冶金新工艺及其物理化学基础研究。

中图分类号: TF59
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- 被引次数: 0
出版历程
- 收稿日期: 2009-08-21

Study on the Process of Adding TiO₂ and VC Superfine Particle to Molten Industrial Pure Iron

1. School of Material and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi, China;
2. Xinyu Iron and Steel Co., Xinyu 338001, Jiangxi, China;
3. School of Metallurgy and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

摘要

摘要: 工业纯铁熔体中分别添加平均粒度为80 nm的TiO₂和1.5μm的VC颗粒，熔炼后得到铸锭试样。用非水溶液电解法提取试样中的非金属夹杂物，用SEM及EDS研究夹杂物的形貌、成分及存在状态。结果表明，外加的TiO₂及VC颗粒与熔体中的原始夹杂物或杂质元素发生作用，形成了一种包裹TiO₂或VC颗粒的复合夹杂物，夹杂物内部的颗粒相界面清晰；MnS夹杂物呈斑点或条带状析出，分布或包覆于VC复合夹杂物颗粒的表面。并从热力学上分析TiO₂及VC颗粒在熔体中的稳定性。
- 工业纯铁熔体 /
- TiO₂ /
- VC /
- 超细颗粒 /
- 夹杂物
Abstract: Ingot specimens were obtained by the process of adding individual 80 nm TiO₂ and 1.5 μm VC superfine particles to molten industrial pure iron.Nonmetallic inclusions were extracted from industrial pure iron ingot sample by the electrolytic method in the nonaqueous solution.Morphology, existent state and components of inclusions were investigated by SEM and EDS.The results showed that additive TiO₂ and VC particles usually combine with microelements and molten inclusion form complex inclusions, and existed in the interior of complex inclusions.There were a lot of white punctate and ribbon MnS inclusions at some surface of VC complex inclusions.Stability of additive TiO₂ and VC superfine particles in molten is also investigated by thermodynamic calculation.
- industrial pure iron molten /
- TiO₂ /
- VC /
- superfine particle /
- inclusion