Fabrication of Ti3AlC2 Powder with High-Purity by Pressureless Sintering
In this work, a new method to fabricate high-purity Ti3AlC2 powder by pressureless sintering (PLS) was reported through adding a little amount of B2O3 as a low-temperature aid. The elemental Ti, Al, and active carbon powders were used as raw materials with the molar ratio of 3 : 1.2 : 2. The effect of sintering temperature on the purity of Ti3AlC2 was investigated at the range of 800°C to 1400°C. The results showed that high-purity Ti3AlC2 powders, in which almost no TiC phase could be found, were stably fabricated by pressureless synthesis at 1400°C for 5 mins in flow Ar atmosphere. The roles of B2O3 addition were discussed in the paper.
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
C. Q. Peng et al., "Fabrication of Ti3AlC2 Powder with High-Purity by Pressureless Sintering", Materials Science Forum, Vols. 475-479, pp. 1247-1250, 2005