| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1464397 | Ceramics International | 2009 | 6 Pages |
Two series of raw materials were adopted to form TiAl/Ti2AlC composites: Ti/Al/TiC and Ti/Al/C. Differential thermal analysis (DTA) of starting powers and X-ray diffraction (XRD) of samples sintered at different temperatures from 600 °C to 1300 °C by hot pressing were utilized to analyze the phase transformation and the mechanism of synthesis. Scanning electron microscopy (SEM) coupled with energy-dispersive spectroscopy (EDS) was utilized to investigate the morphology characteristics of the products. The experimental results showed that Ti reacted with Al to form TiAl intermetallics below 900 °C; and above 900 °C, TiAl reacted with TiC to produce dense TiAl/Ti2AlC composites. The products sintered at 1200 °C had fine crystals and dense fibres, and the distribution of Ti2AlC particles in TiAl matrix was homogeneous.
