Abstract
It’s known that the Nb–Al–C system may crystallize in ternary compounds, including well studied MAX phases (Nb2AlC, Nb4AlC3) and a stable Nb3Al2C phase. This study has shown a route of synthesizing novel bulk Nb5Al3Cx intermetallic phase via wet ball milling of niobium and aluminum powders in petroleum ether and subsequent thermal treatment. The synthesized intermetallic phase has a hexagonal close-packed (hcp) lattice of space group D88 . The phase is formed at 757 °C, keeping stable at least up to ∼1130 °C. The lattice parameters are a = 7.808–7.813 Å, c = 5.270–5.279 Å, c/a = 0.675–0.676 for this phase.
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