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Reaction Between MnO-SiO2-FeO Solid Oxide and Solid Steel Deoxidized by Si and Mn During Heat Treatment at 1473 K (1200 °C)

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Abstract

A new method using a confocal scanning laser microscope for melting oxide at 1673 K (1400 °C) to produce a diffusion couple, which consists of oxide and an iron-based alloy, has been developed for the investigation of a solid-state reaction between them. It is important to obtain good contact between the Fe-Mn-Si alloy and MnO-SiO2-FeO oxide before the diffusion experiment to observe diffusion of elements between them at 1473 K (1200 °C). In this system, the melting point of the oxides is higher than the temperature where the reaction would be observed. The pretreatment involving melting oxide at 1673 K (1400 °C) to obtain good contact with the alloy was carried out using a new method. The effect of the pretreatment at 1673 K (1400 °C) on the diffusion experiment at 1473 K (1200 °C) was minimized by this new method. The effect of diffusion of oxygen on the solid-state reaction between the Fe-Mn-Si alloy and MnO-SiO2-FeO oxide at 1473 K (1200 °C) was observed clearly and showed good agreement with Wagner’s model of internal oxidation of metal.

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Correspondence to Kyung-Ho Kim.

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Manuscript submitted August 18, 2014.

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Liu, Cs., Kim, KH., Kim, SJ. et al. Reaction Between MnO-SiO2-FeO Solid Oxide and Solid Steel Deoxidized by Si and Mn During Heat Treatment at 1473 K (1200 °C). Metall Mater Trans B 46, 1875–1884 (2015). https://doi.org/10.1007/s11663-015-0356-4

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  • DOI: https://doi.org/10.1007/s11663-015-0356-4

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