Morphology, chemical compositions and size distribution of rare earth oxides in pure iron

Shengjun Zhang; Bo Song; Xihua Liu; Qing Lin; Biyan Wang

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Shengjun Zhang, Bo Song, Xihua Liu, Qing Lin, and Biyan Wang, Morphology, chemical compositions and size distribution of rare earth oxides in pure iron, J. Univ. Sci. Technol. Beijing , 10(2003), No. 2, pp.30-33.

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Morphology, chemical compositions and size distribution of rare earth oxides in pure iron

摘要: The pure iron was melted and deoxidized by metallic Al and rare earth elements La, Ce and Y respectively at 1600℃ in a vertical resistance furnace. The morphology, chemical composition and size distribution of the inclusions in deoxidized liquid iron have been investigated by using of SEM and image-analysis techniques. The investigated results show that the deoxidation products in molten iron are complex inclusions of rare earth oxide or Al₂O₃ combined with FeO finely distributed. The proper holding time and rapid cooling rate can make inclusions finer. La, Y and Al are more effective than Ce for obtaining finely distributed inclusions.

Morphology, chemical compositions and size distribution of rare earth oxides in pure iron

Abstract: The pure iron was melted and deoxidized by metallic Al and rare earth elements La, Ce and Y respectively at 1600℃ in a vertical resistance furnace. The morphology, chemical composition and size distribution of the inclusions in deoxidized liquid iron have been investigated by using of SEM and image-analysis techniques. The investigated results show that the deoxidation products in molten iron are complex inclusions of rare earth oxide or Al₂O₃ combined with FeO finely distributed. The proper holding time and rapid cooling rate can make inclusions finer. La, Y and Al are more effective than Ce for obtaining finely distributed inclusions.

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