Degradation Kinetics of MgO-C Refractory at High Temperature

Degradation Kinetics of MgO-C Refractory at High Temperature

The degradation mechanism of a MgO-C refractory was studied at 1973 K using an induction furnace under an Ar atmosphere. Cylindrical specimens were analyzed by X-ray computed tomography according to time. The degradation proceeded from the outer surfaces towards the core. Analysis of the degradation...

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Veröffentlicht in:Metallurgical and materials transactions. B, Process metallurgy and materials processing science Process metallurgy and materials processing science, 2021-06, Vol.52 (3), p.1179-1185
Hauptverfasser: Lee, Juhun, Myung, Jaewoo, Chung, Yongsug
Format: Artikel
Sprache:eng
Schlagworte:
Brief Communication
Characterization and Evaluation of Materials
Chemical reactions
Chemistry and Materials Science
Computed tomography
Degradation
Electric induction furnaces
High temperature
Kinetics
Magnesium oxide
Materials Science
Metallic Materials
Nanotechnology
Shrinking core model
Structural Materials
Surfaces and Interfaces
Thin Films
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Zusammenfassung:The degradation mechanism of a MgO-C refractory was studied at 1973 K using an induction furnace under an Ar atmosphere. Cylindrical specimens were analyzed by X-ray computed tomography according to time. The degradation proceeded from the outer surfaces towards the core. Analysis of the degradation kinetics indicated the cylindrical shrinking core model could adequately describe the degradation behavior. The chemical reaction step between CO gas and the MgO aggregate was determined to be the rate-determining step.
ISSN:1073-5615
1543-1916
DOI:10.1007/s11663-021-02106-9