Effect of N₂ Pressure on the Phase Composition and Morphology of Ti₂AlN Prepared by Self-Propagating Combustion Method

Abstract:

Ti₂AlN ceramic have been prepared by self-propagating high-temperature synthesis method using Ti, Al and TiAl mixture as raw materials under different N₂ pressures. X-ray diffraction (XRD) and scanning electron microscope (SEM) have been used to determine the phase composition and micro morphology of the products. XRD analysis indicates that the main phase of the products is layered ternary compound Ti₂AlN, but there are TiN and AlTi₃ impurities in the products. With increasing N₂ pressure, the relative content of TiN increases, whereas the relative content of AlTi₃ decreases. SEM imagines exhibits that layered grains of the products become larger and tighter with increasing N₂ pressures.

• Periodical: Advanced Materials Research (Volume 710)
• Pages: 199-202
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.710.199
• Online since: June 2013
• Authors: Jia Jin Tian, Feng Rui Zhai, Li Li Zhang, Gui Yang Liu, Zhi Mei Ding
• Keywords: Ceramic, Self-Propagating High-Temperature Synthesis (SHS), Ti₂AlN, X-Ray Diffraction (XRD)

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