Single Phase Ti₂AlC Powder Synthesized from Ti-Al-0.6~0.9TiC-0.1Sn Mixture

Abstract:

A high purity of Ti₂AlC powder has been synthesized by pressureless sintering a mixture of Ti-Al-TiC-Sn (Sn as an additive) powders. Four recipes with different mole ratios of Ti-Al-TiC-Sn were examined at sintering temperature from 1400°C to 1480°C. A high purity of Ti₂AlC powder can be obtained by sintering all these four recipes at temperature 1450°C for 10 min in an Ar atmosphere. The synthesis of Ti₂AlC on this large mole ratio scale of starting materials is associated with the evaporation of Al at high temperature and the structure stability of Ti₂AlC. From the X-ray diffraction analysis, a reaction path for the Ti₂AlC formation is proposed. Scanning electron microscopy was also used to characterize the samples.

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 28-31
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.28
• Online since: June 2012
• Authors: Meng Qi Li, Hong Xiang Zhai, Zhen Ying Huang
• Keywords: Evaporation of Al, Pressureless Sintering, Ti₂AlC

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