Crystal structures of
Ti3AlN and Ti2AlN


Figure 28: Crystal structure of Ti3AlN (CaTiO3, perovskite type) and Ti2AlN (Cr2AlC, H phase type structure). In both structures the metal atoms are close packed. In the cubic perovskite type structure the positions of the close-packed metal atoms correspond to those of the Cu3Au structure (space group Pm-3m) with the stacking sequence ABC, ABC. In the hexagonal Cr2AlC type structure of Ti2AlN the stacking sequence of the close-packed metal atoms is AB, AB.


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