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Author Spotlight: Accelerating Discovery in Microporous Material Chemistry
Published on: October 6, 2023
Synthesis of MAX Phases in the Hf-Al-C System
Thomas Lapauw1,2, Bensu Tunca1,2, Thierry Cabioc'h3
1Department of Materials Engineering, KU Leuven , Kasteelpark Arenberg 44, B-3001 Leuven, Belgium.
Abstract:
For the first time, MAX phases in the Hf-Al-C system were experimentally synthesized using reactive hot pressing. HfC was observed as the main competing phase. The lattice parameters of Hf2AlC and Hf3AlC2 were determined by Rietveld refinement based on the X-ray diffraction data. The atomic stacking sequence was revealed by high-resolution scanning transmission electron microscopy. Mixtures of 211 and 312 stacking were observed within the same grain, including 523 layers. This transition in atomic structure is discussed.
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