Phase Formation in the Synthesis of Ti2AlN by Spark Plasma Sintering in the Ti/AlN System


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Abstract

The synthesis of a Ti2AlN-based material by mechanical activation (MA) of a Ti–AlN powder mixture in a planetary ball mill followed by vacuum spark plasma sintering (SPS) is investigated. It was shown that the AlN/Ti ratio gradually decreases under mechanical activation. Data on the sample’s phase composition, density and hardness after SPS are given. The maximum content of Ti2AlN at 90 wt.% is achieved at SPS temperature of 1300°C. The lowest porosity of samples at 1.9% is achieved at SPS temperature of 1200 – 1300°C, and the hardness HV0.5 in this case is close to 7 GPa.

About the authors

V. G. Gilev

Perm National Research Polytechnic University

Author for correspondence.
Email: Xray@pm.pstu.ac.ru
Russian Federation, Perm

M. N. Kachenyuk

Perm National Research Polytechnic University

Email: Xray@pm.pstu.ac.ru
Russian Federation, Perm

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