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Preparation of Fe-Al intermetallic / TiC-Al2O3 ceramic composites from ilmenite by SHS

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Abstract

Fe-Al intermetallic/TiC-Al2O3 ceramic composites were successfully prepared by self-propagating high-temperature synthesis (SHS) from natural ilmenite, aluminium and carbon as the raw materials. The effects of carbon sources, preheating time and heat treatment temperature on synthesis process and products were investigated in detail, and the reaction process of the FeTiO3-Al-C system was also discussed. It is shown that the temperature and velocity of the combustion wave are higher when graphite is used as the carbon source, which can reflect the effect of the carbon source structure on the combustion synthesis; Prolonging the preheating time or heat treatment temperature is beneficial to the formation of the ordered intermetallics; The temperature and velocity of the combustion wave are improved, but the disordered alloys are difficult to eliminate with the preheating time prolonged. The compound powders mainly containing ordered Fe3Al intermetallic can be prepared through heat treatment at 750 °C.

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Authors and Affiliations

  1. Key Laboratory of New Processing Technology for Nonferrous Metals and Materials(Ministry of Education), Guilin University of Technology, Guilin, 541004, China

    Zou Zhengguang, Wu Yi & Li Xiaomin

  2. School of Materials Science and Engineering, Nanchang University, Nanchang, 330031, China

    Yin Chuanqiang

Authors
  1. Zou Zhengguang
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  2. Wu Yi
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  3. Yin Chuanqiang
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  4. Li Xiaomin
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Corresponding author

Correspondence to Zou Zhengguang.

Additional information

Funded by the Natural Science Fundation of Guangxi Province(No. 0575104), the Guangxi Education Department Key Fund (No. 2003-22), the Guangxi Fund of New Century Qualified Scholars(No. 2002210) and the National Science Foundation (No. 50672016)

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Zou, Z., Wu, Y., Yin, C. et al. Preparation of Fe-Al intermetallic / TiC-Al2O3 ceramic composites from ilmenite by SHS. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 22, 706–709 (2007). https://doi.org/10.1007/s11595-006-4706-6

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  • DOI: https://doi.org/10.1007/s11595-006-4706-6

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