| 准确表征钢中非金属夹杂物颗粒的三维分析技术 |
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| 引用本文： | 张毅,缪乐德,王国栋,邬君飞. 准确表征钢中非金属夹杂物颗粒的三维分析技术[J]. 宝钢技术, 2011, 0(3): 6-14. DOI: 10.3969/j.issn.1008-0716.2011.03.002 |
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| 作者姓名： | 张毅 缪乐德 王国栋 邬君飞 |
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| 作者单位： | 宝山钢铁股份有限公司研究院，上海，201900;宝山钢铁股份有限公司研究院，上海，201900;宝山钢铁股份有限公司研究院，上海，201900;宝山钢铁股份有限公司研究院，上海，201900 |
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| 摘 要： | 主要论述了准确表征钢中非金属夹杂物颗粒的三维分析技术：定电量非水电解提取—电镜观察法。试验研究了不同电解体系下非金属夹杂物的提取效果,确定了弱碱性的2%TEA非水电解液可适用于电解提取大多数的钢中非金属夹杂物颗粒;通过样品大小、电解量控制、电流大小等电解参数的确定,确保所提取的夹杂物颗粒在电镜下的显微分析和统计计算;利用磁选将夹杂物颗粒与碳化物进行无损分离后,避免碳化物的干扰,在电镜下呈现清晰的三维立体形貌,使夹杂物具有更加准确的类型、粒度大小和化学组成;统计多个连续视场内夹杂物颗粒的数量以及粒径,经过与电解质量的换算,得到单位体积的夹杂物颗粒数量和某一尺度区间内粒径分布。最后阐明了定电量非水电解提取—电镜观察法并不能完全取代传统的定量金相法,在夹杂物的表征过程中,两种方法有着不同的应用。
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| 关 键 词： | 非水电解提取 扫描电镜 显微分析 非金属夹杂物 |
Three-dimensional analysis technology for accurately characterizing non-metallic inclusion particles in steel |
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| ZHANG Yi,MIAO Lede,WANG Guodong,WU Junfei. Three-dimensional analysis technology for accurately characterizing non-metallic inclusion particles in steel[J]. Baosteel Technology, 2011, 0(3): 6-14. DOI: 10.3969/j.issn.1008-0716.2011.03.002 |
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| Authors: | ZHANG Yi MIAO Lede WANG Guodong WU Junfei |
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| Affiliation: | ZHANG Yi,MIAO Lede,WANG Guodong and WU Junfei(Research Institute,Baoshan Iron and Steel Co.,Ltd.,Shanghai 201900,China) |
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| Abstract: | In this paper,a kind of three-dimensional analysis technology for characterizing non-metallic inclusion in steel was elaborated.It is the electron microscopy observation,namely the non-aqueous electrolysis extraction with a settled coulometric method.In the research,extraction effects of non-metallic inclusions in different electrolysis systems were studied,and it came to a conclusion that 2% alkalescent TEA non-aqueous electrolyte was applicable for extracting most of non-metallic inclusion particles in st... |
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| Keywords: | microscopic analysis nonaqueous electrolytic extraction SEM non-metallic inclusion |
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