Synthesis and microstructure of layered-ternary Ti2AlC ceramic by high energy milling and hot pressing

✍ Scribed by Jianfeng Zhu; Jiqiang Gao; Jianfeng Yang; Fen Wang; Koichi Niihara

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 395 KB
• Volume: 490
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2008.01.017

✦ Synopsis

Fully dense and single-phase Ti 2 AlC ceramic was successfully synthesized by a high energy milling and hot pressing using Ti, C and Al as starting materials. The effects of composition of the initial elemental powders and sintering temperatures on the purity and formation of Ti 2 AlC were examined. The formation mechanism for the single-phase Ti 2 AlC ceramics was investigated by XRD in details, which could be described as follows: the most of initial elements reacted to form TiC and Ti-Al intermetallics; the intermetallics and the residual Ti and Al transformed to TiAl phase; and finally the TiAl intermetallics and the TiC reacted to yield Ti 2 AlC.