Behavior of ZrO2-C Refractories in Thin-strip Casting of Steel |
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| Affiliation: | Abhishek KUMAR;Vivek THAPLIYAL;Jeffrey D.SMITH;Materials Science and Engineering Department,Missouri University of Science & Technology; |
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| Abstract: | Zirconia graphite refractory is used as a core-nozzle in the thin-strip casting of steel. Post-mortem analysis of used refractory was performed in an effort to establish the failure mechanism. Corrosion behavior was studied against molten steel with Mn O- SiO 2based liquid inclusions. Corrosion of these materials involves dissolution and oxidation of graphite in the matrix followed by penetration of liquid slag leading to degradation of ZrO 2particles. Thermodynamic equilibrium calculations were performed to study this corrosion mechanism. |
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