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In-situ observation of dynamic interfacial phenomena between CaO-(SiO2 or Al2O3) slag and Fe-11%Cr alloy near the MgO-6%C refractory at 1823 K
- Authors
- Shin, Minsoo; Cho, Seungyoun; Lee, Joonho; Park, Joo-Hyun
- Issue Date
- 6월-2010
- Publisher
- KOREAN INST METALS MATERIALS
- Keywords
- oxides; purification; wetting; image analysis; dynamic interfacial phenomena
- Citation
- METALS AND MATERIALS INTERNATIONAL, v.16, no.3, pp.495 - 499
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- METALS AND MATERIALS INTERNATIONAL
- Volume
- 16
- Number
- 3
- Start Page
- 495
- End Page
- 499
- ISSN
- 1598-9623
- Abstract
- We investigated dynamic interfacial phenomena at the slag-metal-refractory three-phase interface using a high temperature X-ray radiographic technique. Dynamic movement of the metal-slag line between Fe-11%Cr alloy and CaO-(SiO2 or Al2O3) slag was observed near the MgO-6%C refractory at 1823 K. We observed corresponding local corrosion of the refractory with CaO-SiO2 slag but it was negligible with CaO-Al2O3 slag. From a thermodynamic perspective, the Marangoni convection at the slag-metal-refractory interface is not the dominant factor determining the corrosion rate of the MgO-C refractory. Rather, it is the large solubility limit and the mass transfer in the slag phase.
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