Effect of Al Content in Steel on Interfacial Interaction between Molten Steel and MgO Substrate

MgO–C refractories are of paramount importance in the converter side blowing system, requiring outstanding oxidation resistance under harsh conditions including high temperature, oxygen atmosphere, and high‐speed airflow. In this study, MgSiN2 phase reconstruction was used to improve the oxidation resistance of MgO–C refractories, as well as the mechanical properties and oxidation resistance of MgO–C refractories were evaluated. The results indicated that the cold modulus of rupture of the sample with 9 wt% MgSiN2 was increased by 93.3% compared with the MgO–C refractories without MgSiN2. After oxidation tests, the oxidation index and rate constant (k) of the sample with 9 wt% MgSiN2 were reduced by 38.9% and 35.3%. Furthermore, incorporating MgSiN2 facilitated the formation of layered dense structures consisting of plate‐like Mg‐Sialon and MgO–Mg2SiO4–MgAl2O4. This structural optimization effectively inhibited oxygen diffusion and reaction within the material, resulting in gradual oxygen potential mitigation.

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Effect of Al Content in Steel on Interfacial Interaction between Molten Steel and MgO Substrate

Abstract: The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/srin.202200778.

Cited by 3 publications

References 34 publications

Effect of Applied Voltage on Melting and Wetting Behaviors of CaO-SiO2-MgO-Al2O3 slag on Alumina Substrate

Effect of Applied Voltage on Melting and Wetting Behaviors of CaO-SiO2-MgO-Al2O3 slag on Alumina Substrate

The high-efficiency dephosphorization mechanism of steel by a novel porous MgO–CaO based refractories

Strategies to improve oxidation resistance of MgO–C refractories by decreasing oxygen potential through MgSiN₂

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Effect of Al Content in Steel on Interfacial Interaction between Molten Steel and MgO Substrate

Abstract: The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/srin.202200778.

Cited by 3 publications

References 34 publications

Effect of Applied Voltage on Melting and Wetting Behaviors of CaO-SiO2-MgO-Al2O3 slag on Alumina Substrate

Effect of Applied Voltage on Melting and Wetting Behaviors of CaO-SiO2-MgO-Al2O3 slag on Alumina Substrate

The high-efficiency dephosphorization mechanism of steel by a novel porous MgO–CaO based refractories

Strategies to improve oxidation resistance of MgO–C refractories by decreasing oxygen potential through MgSiN2

Contact Info

Product

Resources

About

Strategies to improve oxidation resistance of MgO–C refractories by decreasing oxygen potential through MgSiN₂