Low-temperature synthesis of high-purity Ti3AlC2 by MA-SPS technique

✍ Scribed by C. Yang; S.Z. Jin; B.Y. Liang; S.S. Jia

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 649 KB
• Volume: 29
• Category: Article
• ISSN: 0955-2219
• DOI: 10.1016/j.jeurceramsoc.2008.05.035

✦ Synopsis

Ternary carbide Ti 3 AlC 2 was synthesized by mechanical alloying (MA) and spark plasma sintering (SPS) from elemental powder mixtures of Ti, Al and C, and the effect of Al content on formation of Ti 3 AlC 2 during both processes was investigated. The results showed that adding proper Al content in the staring materials significantly increased the phase purity of Ti 3 AlC 2 in the synthesized samples. Dense and high-purity Ti 3 AlC 2 with <1 wt.% TiC could be successfully obtained by spark plasma sintering of powders mechanically alloyed for 9.5 h from a starting powder mixtures of 3Ti/1.1Al/2C at a lower sintering temperature of 1050 • C for 10-20 min.