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Improved Corrosion Resistance of Al2O3-SiC-C Castables Due to In Situ Synthesized TiC/TiN

  • Refractories
  • Published:
Interceram - International Ceramic Review

Abstract

In order to improve the corrosion resistance of Al2O3-SiC-C castables, super-fine TiO2 (SFT) powder was added directly to the castable with the aim of synthesizing TiC/TiN through in situ reactions. Thermodynamic calculations carried out by FactSage suggested that it was possible to synthesize TiC/TiN through in situ reactions. Analysis performed by X-ray diffraction (XRD) and a scanning electronic microscope equipped with an energy diffraction spectrum analyzer (SEM-EDS) indicated that TiC/TiN was synthesized in the Al2O3-SiC-C castable. The corrosion resistance of Al2O3-SiC-C castables with and without 2 mass-% SFT was compared after a static crucible corrosion test with the assistance of SEM-EDS and XRD. It was clear that the corrosion resistance of Al2O3-SiC-C castables with added SFT was much better then that without added SFT. This might be associated with the location of the in situ-formed TiC/TiN solid particles in the liquid slag, which would prevent the penetration of molten slag into the structure through their effect on the viscosity increment of liquid slag.

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Authors and Affiliations

  1. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, China

    Y. Yin, Y. Liang, Y. Ni, S. Ge, J. Nie & Z. Liu

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  1. Y. Yin
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  2. Y. Liang
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  3. Y. Ni
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  4. S. Ge
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  5. J. Nie
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  6. Z. Liu
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Correspondence to Y. Yin.

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Yin, Y., Liang, Y., Ni, Y. et al. Improved Corrosion Resistance of Al2O3-SiC-C Castables Due to In Situ Synthesized TiC/TiN. Interceram. - Int. Ceram. Rev. 65, 244–249 (2016). https://doi.org/10.1007/BF03401176

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