Preparation of Bulk Ti2AlC Using Ti3AlC2 Powders as a Starting Material
Highly pure and dense bulk Ti2AlC was prepared by hot-pressing a mixture of the “312” phase Ti3AlC2 powders, and the element Ti and Al powders. Different ratios of the starting materials and different sintering temperature were attempted in order to obtain a highly pure and dense bulk Ti2AlC sample. Phase analysis and microstructures observing were performed by using by XRD, SEM as well as an X-ray fluorescence spectrometer. The results show that a nearly full dense bulk Ti2AlC sample can be prepared at 1300°C and 30MPa for 30 minutes in argon atmosphere. A dominant mechanism to form the “211” phase Ti2AlC can be attributed to the directly connecting between Al and Ti6C octahedron, which is as an intermediate phase in the Al-rich liquid mediator during the hot pressing.
Wei Pan and Jianghong Gong
X. H. Chen et al., "Preparation of Bulk Ti2AlC Using Ti3AlC2 Powders as a Starting Material", Advanced Materials Research, Vols. 105-106, pp. 83-86, 2010