Preparation of Bulk Ti₂AlC Using Ti₃AlC₂ Powders as a Starting Material

Abstract:

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.

• Periodical: Advanced Materials Research (Volumes 105-106)
• Pages: 83-86
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.105-106.83
• Online since: April 2010
• Authors: Xin Hua Chen, Hong Xiang Zhai, Shi Bo Li, Yang Zhou, Zhen Ying Huang
• Keywords: Hot-Pressing, Ti₂AlC, Ti₆C Octahedron

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