Effect of Al Mole Ratio on Iron Aluminide Reinforced with TiB2-Al2O3 Composite by Self-Propagating High-Temperature Synthesis

Kunyaporn Tapsuan; Niyomwas Sutham

doi:10.4028/www.scientific.net/AMR.488-489.305

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 488-489Effect of Al Mole Ratio on Iron Aluminide...

Effect of Al Mole Ratio on Iron Aluminide Reinforced with TiB₂-Al₂O₃ Composite by Self-Propagating High-Temperature Synthesis

Abstract:

The Fe₃Al-TiB₂-Al₂O₃ composite has been prepared by self-propagating high-temperature synthesis (SHS) from FeTiO₃-B₂O₃-Al system. The standard Gibbs energy minimization method was used to calculate the equilibrium compositions of the reacting species. The reactions were carried out in a SHS reactor under static argon gas at the pressure of 0.5 MPa. The effects of Al molar ratio of 4, 4.33 and 5 mole on the results product were investigated. The composition and microstructure of SHS products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The optimum result of Fe3Al intermetallics phase was obtained when using 4.33 mole of Al.

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Advanced Materials Research (Volumes 488-489)

Pages:

305-309

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.488-489.305

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Online since:

March 2012

Authors:

Kunyaporn Tapsuan, Niyomwas Sutham

Keywords:

Fe₃Al-TiB₂-Al₂O₃ Composite, Ilmenite, Milling Time, Self-Propagation High-Temperature Synthesis (SHS)

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