Synthesis of Ti₃SiC₂ via Modified-SHS System through Arc Melting

Abstract:

Inter-metallic compound of Ti₃SiC₂ was produced via modified-SHS (self-propagating high temperature synthesis). Elemental powders of titanium, silicon and graphite were weighed according to their stoichiometric ratios (3:1:2) respectively. These powders were ball milled for 1 hour, then compacted into cylindrical shape. Synthesis of Ti₃SiC₂ was carried out by using arc melting method. The effect of different arc melting time of 10, 30 and 60 seconds was studied. Phase formation and microstructure were analyzed by using XRD and SEM. The formation of Ti₃SiC₂ was confirmed by XRD, and the SEM micrograph shows that the grain is in needle shape. XRD result also shows that the impurities are present in all the samples. TiC appeared to be the common and dominant impurity in all samples, with relatively low intensities in Ti₅Si₃ and TiSi₂ phases. Some raw materials phase was still existed in sample arc melted for 10 and 30 seconds. Hence, it can be deduced that the raw materials had not yet fully taking part in the formation of Ti₃SiC₂.

• Periodical: Advanced Materials Research (Volumes 239-242)
• Pages: 2128-2131
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.239-242.2128
• Online since: May 2011
• Authors: Julie Juliewatty Mohamed, Phua Chee Hung, Zainal Arifin Ahmad
• Keywords: Arc-Melting, SHS, Titanium Silicon Carbide

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