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Interceram - International Ceramic Review

, Volume 65, Issue 6–7, pp 244–249 | Cite as

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

  • Y. Yin
  • Y. Liang
  • Y. Ni
  • S. Ge
  • J. Nie
  • Z. Liu
Refractories

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.

Keywords

corrosion resistance super fine TiO2 Al2O3-SIC-C castable TiC/TiN 

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Copyright information

© Springer Fachmedien Wiesbaden 2016

Authors and Affiliations

  • Y. Yin
    • 1
  • Y. Liang
    • 1
  • Y. Ni
    • 1
  • S. Ge
    • 1
  • J. Nie
    • 1
  • Z. Liu
    • 1
  1. 1.The State Key Laboratory of Refractories and MetallurgyWuhan University of Science and TechnologyWuhanChina

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