In situ observation of the dissolution phenomena of SiC particle in CaO-SiO2-MnO slag

Joo Hyun Park; Jin Gyun Park; Dong Joon Min; Young E. Lee; Youn Bae Kang

doi:10.1016/j.jeurceramsoc.2010.07.020

In situ observation of the dissolution phenomena of SiC particle in CaO-SiO₂-MnO slag

Joo Hyun Park, Jin Gyun Park, Dong Joon Min, Young E. Lee, Youn Bae Kang

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

Abstract

The dissolution of SiC particle at 1600°C in the CaO-SiO₂-MnO slag was observed in situ by means of confocal scanning laser microscopy in order to make the determination of dissolution mechanism. The SiC particle is initially wetted by molten slag from the outer surface and the wetting between SiC and slag phase is more dominant in the composition of higher CaO/SiO₂ ratio. When the SiC particle is wetted by molten slag, the gas bubbles that are mainly CO gas is generated by the reaction between SiC and MnO in slag phase and are continuously evolved at the wetted area, which is pronounced as the CaO/SiO₂ ratio increases. The dissolution of SiC particle in the slag through the reaction with MnO is enhanced in the composition of higher CaO/SiO₂ ratio not only due to greater thermodynamic driving force but also due to accelerated mass transport kinetics.

Original language	English
Pages (from-to)	3181-3186
Number of pages	6
Journal	Journal of the European Ceramic Society
Volume	30
Issue number	15
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2010.07.020
Publication status	Published - 2010 Nov

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Materials Chemistry

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10.1016/j.jeurceramsoc.2010.07.020

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title = "In situ observation of the dissolution phenomena of SiC particle in CaO-SiO2-MnO slag",

abstract = "The dissolution of SiC particle at 1600°C in the CaO-SiO2-MnO slag was observed in situ by means of confocal scanning laser microscopy in order to make the determination of dissolution mechanism. The SiC particle is initially wetted by molten slag from the outer surface and the wetting between SiC and slag phase is more dominant in the composition of higher CaO/SiO2 ratio. When the SiC particle is wetted by molten slag, the gas bubbles that are mainly CO gas is generated by the reaction between SiC and MnO in slag phase and are continuously evolved at the wetted area, which is pronounced as the CaO/SiO2 ratio increases. The dissolution of SiC particle in the slag through the reaction with MnO is enhanced in the composition of higher CaO/SiO2 ratio not only due to greater thermodynamic driving force but also due to accelerated mass transport kinetics.",

author = "Park, {Joo Hyun} and Park, {Jin Gyun} and Min, {Dong Joon} and Lee, {Young E.} and Kang, {Youn Bae}",

year = "2010",

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doi = "10.1016/j.jeurceramsoc.2010.07.020",

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T1 - In situ observation of the dissolution phenomena of SiC particle in CaO-SiO2-MnO slag

AU - Park, Joo Hyun

AU - Park, Jin Gyun

AU - Min, Dong Joon

AU - Lee, Young E.

AU - Kang, Youn Bae

PY - 2010/11

Y1 - 2010/11

N2 - The dissolution of SiC particle at 1600°C in the CaO-SiO2-MnO slag was observed in situ by means of confocal scanning laser microscopy in order to make the determination of dissolution mechanism. The SiC particle is initially wetted by molten slag from the outer surface and the wetting between SiC and slag phase is more dominant in the composition of higher CaO/SiO2 ratio. When the SiC particle is wetted by molten slag, the gas bubbles that are mainly CO gas is generated by the reaction between SiC and MnO in slag phase and are continuously evolved at the wetted area, which is pronounced as the CaO/SiO2 ratio increases. The dissolution of SiC particle in the slag through the reaction with MnO is enhanced in the composition of higher CaO/SiO2 ratio not only due to greater thermodynamic driving force but also due to accelerated mass transport kinetics.

AB - The dissolution of SiC particle at 1600°C in the CaO-SiO2-MnO slag was observed in situ by means of confocal scanning laser microscopy in order to make the determination of dissolution mechanism. The SiC particle is initially wetted by molten slag from the outer surface and the wetting between SiC and slag phase is more dominant in the composition of higher CaO/SiO2 ratio. When the SiC particle is wetted by molten slag, the gas bubbles that are mainly CO gas is generated by the reaction between SiC and MnO in slag phase and are continuously evolved at the wetted area, which is pronounced as the CaO/SiO2 ratio increases. The dissolution of SiC particle in the slag through the reaction with MnO is enhanced in the composition of higher CaO/SiO2 ratio not only due to greater thermodynamic driving force but also due to accelerated mass transport kinetics.

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In situ observation of the dissolution phenomena of SiC particle in CaO-SiO₂-MnO slag

Abstract

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